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2018 Volume 33 Issue 9
2018, 33(9): 1-7
doi: 10.3866/PKU.DXHX201807025
Abstract:
We discussed the training program based on the "enrollment and training of students in large category" for chemistry majors of College of Chemistry and Chemical Engineering at Xiamen University, and expounded the curriculum system including public basic courses, general knowledge courses, core subject courses, multi-level practical courses, modular and professional courses, and the elective courses.
We discussed the training program based on the "enrollment and training of students in large category" for chemistry majors of College of Chemistry and Chemical Engineering at Xiamen University, and expounded the curriculum system including public basic courses, general knowledge courses, core subject courses, multi-level practical courses, modular and professional courses, and the elective courses.
2018, 33(9): 8-15
doi: 10.3866/PKU.DXHX201804007
Abstract:
To carry out the undergraduate education objective of Wuhan University, the College of Chemistry and Molecular Sciences in Wuhan University had revised and compiled the 2018 edition of the education scheme. The 2018 edition features the strengthening of the mastery of mathematics and physics, the concentration on the improvement of problem-solving skills, the requirement for all the students to take "scientific research training and practice", the dramatic reduction of the required credits for elective courses, the advocating of personalized development, and the encouragement for taking interdisciplinary courses and cross-major courses.
To carry out the undergraduate education objective of Wuhan University, the College of Chemistry and Molecular Sciences in Wuhan University had revised and compiled the 2018 edition of the education scheme. The 2018 edition features the strengthening of the mastery of mathematics and physics, the concentration on the improvement of problem-solving skills, the requirement for all the students to take "scientific research training and practice", the dramatic reduction of the required credits for elective courses, the advocating of personalized development, and the encouragement for taking interdisciplinary courses and cross-major courses.
2018, 33(9): 16-20
doi: 10.3866/PKU.DXHX201809006
Abstract:
Constructing a new curriculum system and reforming teaching content is the continuing theme of higher education reform. Based on the characteristics of local comprehensive universities, this paper constructed a new system of "four-in-one" curriculum, formed a three-level curriculum module, and carried out a multi-angle and multi-level curriculum reform, laying a foundation for the cultivation of innovative talents in chemistry.
Constructing a new curriculum system and reforming teaching content is the continuing theme of higher education reform. Based on the characteristics of local comprehensive universities, this paper constructed a new system of "four-in-one" curriculum, formed a three-level curriculum module, and carried out a multi-angle and multi-level curriculum reform, laying a foundation for the cultivation of innovative talents in chemistry.
2018, 33(9): 21-27
doi: 10.3866/PKU.DXHX201807024
Abstract:
The construction of scientific and characteristic undergraduate training program is the prerequisite to the undergraduate education. This paper focuses on the reform and revision of undergraduate chemistry curriculums by the College of Chemistry at Sichuan University. It summarizes the basic approach of building a characteristic undergraduate training program from the following aspects:defining education objectives, identifying the features and advantages, innovating the cultivation mode and designing the curriculums. This work also provides certain implications to the training program construction of related disciplines.
The construction of scientific and characteristic undergraduate training program is the prerequisite to the undergraduate education. This paper focuses on the reform and revision of undergraduate chemistry curriculums by the College of Chemistry at Sichuan University. It summarizes the basic approach of building a characteristic undergraduate training program from the following aspects:defining education objectives, identifying the features and advantages, innovating the cultivation mode and designing the curriculums. This work also provides certain implications to the training program construction of related disciplines.
2018, 33(9): 28-32
doi: 10.3866/PKU.DXHX201805012
Abstract:
This paper mainly introduces the teaching reform and practice of curriculum system for innovative chemistry-majored students in Lanzhou University. It is intended to provide some advices for reform of curriculum system and teaching contents for chemistry majors in the future.
This paper mainly introduces the teaching reform and practice of curriculum system for innovative chemistry-majored students in Lanzhou University. It is intended to provide some advices for reform of curriculum system and teaching contents for chemistry majors in the future.
2018, 33(9): 33-37
doi: 10.3866/PKU.DXHX201803054
Abstract:
The development of chemistry majors in normal universities has their own histories, and the characteristics are also different from chemistry majors in comprehensive universities. In order to cultivate talents with specialty, the curriculum system in the chemistry majors of normal university should include general courses, core disciplinary courses, and personal developmental courses, which are designed specifically based on the characteristics and needs of different kinds of students. The pedagogy in the chemistry majors of normal university should embody the chemical thinking and modern teaching principles and methodologies, and integrate the process and characteristics of chemical research with teaching process and methods deeply.
The development of chemistry majors in normal universities has their own histories, and the characteristics are also different from chemistry majors in comprehensive universities. In order to cultivate talents with specialty, the curriculum system in the chemistry majors of normal university should include general courses, core disciplinary courses, and personal developmental courses, which are designed specifically based on the characteristics and needs of different kinds of students. The pedagogy in the chemistry majors of normal university should embody the chemical thinking and modern teaching principles and methodologies, and integrate the process and characteristics of chemical research with teaching process and methods deeply.
2018, 33(9): 38-46
doi: 10.3866/PKU.DXHX201804018
Abstract:
The new engineering education goal focuses on cultivating wide-caliber, interdisciplinary, and compound talents of applied chemistry. Based on the teaching reform research on the applied chemistry major in Hunan University, we have summarized the achievements of teaching reform in recent years in the fields of specialty comprehensive reform, practical teaching, innovation and entrepreneurship, and international courses.
The new engineering education goal focuses on cultivating wide-caliber, interdisciplinary, and compound talents of applied chemistry. Based on the teaching reform research on the applied chemistry major in Hunan University, we have summarized the achievements of teaching reform in recent years in the fields of specialty comprehensive reform, practical teaching, innovation and entrepreneurship, and international courses.
2018, 33(9): 47-51
doi: 10.3866/PKU.DXHX201803046
Abstract:
This paper briefly introduces the basic situation of content selection of the inorganic chemistry course in Wuhan University. Our basic teaching ideas are:taking "structure" as the main line that runs through the teaching, establishing the knowledge network and following the "application" and "essential" principles. With the guidance of these concepts, we integrate teaching contents to help students understand the basic concepts of chemistry and acquire the chemical way of thinking.
This paper briefly introduces the basic situation of content selection of the inorganic chemistry course in Wuhan University. Our basic teaching ideas are:taking "structure" as the main line that runs through the teaching, establishing the knowledge network and following the "application" and "essential" principles. With the guidance of these concepts, we integrate teaching contents to help students understand the basic concepts of chemistry and acquire the chemical way of thinking.
2018, 33(9): 52-54
doi: 10.3866/PKU.DXHX201804004
Abstract:
In this paper, the curriculum system construction of "Chemistry and Society" is introduced, which focuses on highlighting the "general education" of this course. The course aims to improve and enhance the students' ability of critical thinking by helping students to clear up misunderstanding of chemistry and introducing the chemical common sense to students.
In this paper, the curriculum system construction of "Chemistry and Society" is introduced, which focuses on highlighting the "general education" of this course. The course aims to improve and enhance the students' ability of critical thinking by helping students to clear up misunderstanding of chemistry and introducing the chemical common sense to students.
2018, 33(9): 55-61
doi: 10.3866/PKU.DXHX201802004
Abstract:
Taking classical synthetic experiments, the syntheses of potassium dioxalatocuprate (Ⅱ) dihydrate and potassium trioxalatoferrate (Ⅲ), as examples, this article discusses the effects of synthetic conditions on the "quality" and "quantity" of the product. Moreover, a flowchart clearly shows the cases when the students fall into a wrong path due to the lack of rethinking and judgement during the synthesis of potassium trioxalatoferrate. The article also discusses on how to inspire students to analyze when they were misguided. Therefore, this article reveals on how to educate students to think and criticize in the teaching process.
Taking classical synthetic experiments, the syntheses of potassium dioxalatocuprate (Ⅱ) dihydrate and potassium trioxalatoferrate (Ⅲ), as examples, this article discusses the effects of synthetic conditions on the "quality" and "quantity" of the product. Moreover, a flowchart clearly shows the cases when the students fall into a wrong path due to the lack of rethinking and judgement during the synthesis of potassium trioxalatoferrate. The article also discusses on how to inspire students to analyze when they were misguided. Therefore, this article reveals on how to educate students to think and criticize in the teaching process.
2018, 33(9): 62-68
doi: 10.3866/PKU.DXHX201712011
Abstract:
The experiences of stratified teaching in analytical chemistry laboratory course were discussed. Through reforming the curriculum and teaching materials, modularizing the instruction content, offering compulsory and optional experiments, dividing and improving the examination and evaluation mechanism, a stratified teaching system for different majors and students was established. The specific mode such as the grouping principle of the experiments, implement of selective experiments and the experiment preparation were discussed under stratified teaching system. Blended Learning was used to make the learning process more effective.
The experiences of stratified teaching in analytical chemistry laboratory course were discussed. Through reforming the curriculum and teaching materials, modularizing the instruction content, offering compulsory and optional experiments, dividing and improving the examination and evaluation mechanism, a stratified teaching system for different majors and students was established. The specific mode such as the grouping principle of the experiments, implement of selective experiments and the experiment preparation were discussed under stratified teaching system. Blended Learning was used to make the learning process more effective.
2018, 33(9): 69-74
doi: 10.3866/PKU.DXHX201802025
Abstract:
A research-based comprehensive experiment was introduced:synthesis and characterization of NaA zeolite membranes prepared by the secondary growth method. NaA zeolite crystals were introduced into the outer surface of α-Al2O3 porous tubes, then NaA zeolite membranes were prepared by the secondary growth method. The morphology and structure of the support, the NaA zeolite crystals and membranes were characterized by SEM and XRD, and the separation properties of the membranes were tested by pervaporation separation device for dehydration of ethanol. Through this experiment, students can understand membrane separation technology that is the frontier of scientific research, which arouses students' interest in scientific research and cultivates students' research ability. Moreover, this experiment covers synthesis, characterization and performance test, which contains more knowledge points in wider coverage of disciplines. It is helpful to foster students' innovative consciousness and practical skills, as well as promoting their integrative skills of applying knowledge.
A research-based comprehensive experiment was introduced:synthesis and characterization of NaA zeolite membranes prepared by the secondary growth method. NaA zeolite crystals were introduced into the outer surface of α-Al2O3 porous tubes, then NaA zeolite membranes were prepared by the secondary growth method. The morphology and structure of the support, the NaA zeolite crystals and membranes were characterized by SEM and XRD, and the separation properties of the membranes were tested by pervaporation separation device for dehydration of ethanol. Through this experiment, students can understand membrane separation technology that is the frontier of scientific research, which arouses students' interest in scientific research and cultivates students' research ability. Moreover, this experiment covers synthesis, characterization and performance test, which contains more knowledge points in wider coverage of disciplines. It is helpful to foster students' innovative consciousness and practical skills, as well as promoting their integrative skills of applying knowledge.
2018, 33(9): 75-81
doi: 10.3866/PKU.DXHX201802015
Abstract:
A research-type comprehensive experiment, which involves synthesis, characterization and application study of metal-organic framework (MOFs) nanocrystals, was introduced. A creative strategy was used to prepare metal-organic framework nanocrystals with smallest particle size amongst published MOFs. The essential characterization methods for nanomaterial and adsorption kinetics study were presented so that the students can get knowledge of the research in the nanomaterial field. The experiment system can serve to stimulate students' interest in scientific research and innovation consciousness and train students' chemical thoughts by analysis of the results from different react conditions.
A research-type comprehensive experiment, which involves synthesis, characterization and application study of metal-organic framework (MOFs) nanocrystals, was introduced. A creative strategy was used to prepare metal-organic framework nanocrystals with smallest particle size amongst published MOFs. The essential characterization methods for nanomaterial and adsorption kinetics study were presented so that the students can get knowledge of the research in the nanomaterial field. The experiment system can serve to stimulate students' interest in scientific research and innovation consciousness and train students' chemical thoughts by analysis of the results from different react conditions.
2018, 33(9): 82-87
doi: 10.3866/PKU.DXHX201802018
Abstract:
A membrane separation experimental project of chemical engineering was introduced, and it had been applied to the undergraduate laboratory teaching. The effect of the membrane distillation for seawater desalination was investigated. From this project, the students learned the advanced knowledge of membrane distillation and experimental technology of membrane distillation for seawater desalination. They also increased application consciousness of transforming scientific and technological achievements into productivity.
A membrane separation experimental project of chemical engineering was introduced, and it had been applied to the undergraduate laboratory teaching. The effect of the membrane distillation for seawater desalination was investigated. From this project, the students learned the advanced knowledge of membrane distillation and experimental technology of membrane distillation for seawater desalination. They also increased application consciousness of transforming scientific and technological achievements into productivity.
2018, 33(9): 88-94
doi: 10.3866/PKU.DXHX201802032
Abstract:
This paper introduces the problems in the experiment of the preparation of ammonium ferrous sulfate, summarizes the measures which are adopted for the improvement of the problems in the experiment over the past thirty years, and gives the exploration, concrete practice and effect on the experiment.
This paper introduces the problems in the experiment of the preparation of ammonium ferrous sulfate, summarizes the measures which are adopted for the improvement of the problems in the experiment over the past thirty years, and gives the exploration, concrete practice and effect on the experiment.
2018, 33(9): 95-104
doi: 10.3866/PKU.DXHX201802035
Abstract:
Deep understanding of the nature and characteristics of close packings of equal spheres is fundamental for further study towards structure and property of metallic crystals. And the knowledge to number and distribution of various interstices in close packings of equal spheres is very important to help illustrate the structure and property of ionic crystals. However, the diversity and complexity of the crystal structures make it difficult in teaching and learning structural chemistry. In this paper, based on discussions on the three most common close packing models (A1, A2, A3), a method to locate centers of interstices according to calculating the centroid fractional coordinates (CFC) of particles constructing these interstices was introduced. In addition, the way using CFCs to calculated distance between vertex and interstice center and the shortest distance from interstice center to surface of the packing sphere was also illustrated in detail. Compared with the traditional solid geometry method, the CFC method is demonstrated to be much simpler, easier to learn, and most importantly, helpful for understanding number and distribution of various interstices in close packings.
Deep understanding of the nature and characteristics of close packings of equal spheres is fundamental for further study towards structure and property of metallic crystals. And the knowledge to number and distribution of various interstices in close packings of equal spheres is very important to help illustrate the structure and property of ionic crystals. However, the diversity and complexity of the crystal structures make it difficult in teaching and learning structural chemistry. In this paper, based on discussions on the three most common close packing models (A1, A2, A3), a method to locate centers of interstices according to calculating the centroid fractional coordinates (CFC) of particles constructing these interstices was introduced. In addition, the way using CFCs to calculated distance between vertex and interstice center and the shortest distance from interstice center to surface of the packing sphere was also illustrated in detail. Compared with the traditional solid geometry method, the CFC method is demonstrated to be much simpler, easier to learn, and most importantly, helpful for understanding number and distribution of various interstices in close packings.
2018, 33(9): 105-110
doi: 10.3866/PKU.DXHX201801029
Abstract:
In this paper, we try to use the arrow-pushing method to explain the reaction mechanisms of some high-valence transition-metallic oxysalts. Some typical examples are introduced to demonstrate the method.
In this paper, we try to use the arrow-pushing method to explain the reaction mechanisms of some high-valence transition-metallic oxysalts. Some typical examples are introduced to demonstrate the method.
