Advanced Search

Citation: Yang Shangrun*, Xu Weixin. ISODESORPTION RATE METHOD FOR DETERMINING Ed AND koFROM A TPD SPECTRUM[J]. Acta Physico-Chimica Sinica, ;1989, 5(05): 541-545. doi: 10.3866/PKU.WHXB19890507 shu

ISODESORPTION RATE METHOD FOR DETERMINING Ed AND koFROM A TPD SPECTRUM

  • 1.

    Department of Chemistry; Nanjiny University

  • Received Date: 2 March 1988
    Available Online: 15 October 1989

  • A concise method——isodesorption rate method(IDRM) is presented for the determination of E_d and k_0 from a temperature programmed desorption (decomposition)(TPD) spectrum with no re-adsorption. Based on the Arrhenius equation and the constant heating rate, we have Eqs.(1) and (2)(see the text), where T, b, t, θ, k_0, E_d, and R are temperature, heating rate, time, Surface coverage, pre-exponential factor, activation energy of desorption (decomposition), and standard gas constant, respectively. For the desorption (decomposition) rate of h_i at T_i is equal to that of h_j at T_j (see Fig.1), Eqs.(3)—(5) (1st order) and Eqs.(11)—(13) (2nd order) are deduced. The values of h_i, h_j, θ_i and θ_j may be evaluated by Eqs.(6) and (7), where W_(T_ih_ih_jT_j) is the weight of the paper corresponding to the rectangle T_ih_ih_jT_j, W_0 is that under the spectrum T_Lh_ih_mh_jT_H, and W_i, W_j are that of the peak areas of T≥T_i, T_j respectively. By substituting Eqs.(6) and (7) to Eqs.(3)—(5) and (11)—(13), the resultant Eqs.(8)—(10) (1st order) and (14)—(16) (2nd order) are obtained for determining E_d and k_0. Table 1 shows that the results determinedby different methods coincide with each other quite well. It also proves that the selected kinetic orders of desorption (decomposition) are correct because the relative errors between the E_d′s by IDRM and CTM~[5] are <3% otherwise that will be about 30% when the desorption (decomposition) order is erroneously selected. So the combination of IDRM andCTM is benificial for determining the kinetic order of desorption (decomposition).

  • 加载中
  • 加载中
    1. [1]

      Hao Wu ,  Zhen Liu ,  Dachang Bai . 1H NMR Spectrum of Amide Compounds. University Chemistry, 2024, 39(3): 231-238. doi: 10.3866/PKU.DXHX202309020

    2. [2]

      Heng Zhang . Determination of All Rate Constants in the Enzyme Catalyzed Reactions Based on Michaelis-Menten Mechanism. University Chemistry, 2024, 39(4): 395-400. doi: 10.3866/PKU.DXHX202310047

    3. [3]

      Shuying Zhu ,  Shuting Wu ,  Ou Zheng . Improvement and Expansion of the Experiment for Determining the Rate Constant of the Saponification Reaction of Ethyl Acetate. University Chemistry, 2024, 39(4): 107-113. doi: 10.3866/PKU.DXHX202310117

    4. [4]

      Ping Song ,  Nan Zhang ,  Jie Wang ,  Rui Yan ,  Zhiqiang Wang ,  Yingxue Jin . Experimental Teaching Design on Synthesis and Antitumor Activity Study of Cu-Pyropheophorbide-a Methyl Ester. University Chemistry, 2024, 39(6): 278-286. doi: 10.3866/PKU.DXHX202310087

    5. [5]

      Wei Huang ,  Weiwei Chen ,  Yongxing Tang . Green Mountains and Blue Waters Spanning Nine Centuries: Decrypting “The Picture of a Thousand Miles of Rivers and Mountains” from a Chemical Perspective. University Chemistry, 2024, 39(9): 189-195. doi: 10.12461/PKU.DXHX202312075

    6. [6]

      Hao Ren ,  Wen Zhao ,  Fangna Dai ,  Wenyue Guo . Finite Difference Solution of One-Dimensional Quantum Systems: (1) Fundamental Concepts and Infinite Square Well. University Chemistry, 2025, 40(3): 124-131. doi: 10.12461/PKU.DXHX202405145

    7. [7]

      Qingyang Cui ,  Feng Yu ,  Zirun Wang ,  Bangkun Jin ,  Wanqun Hu ,  Wan Li . From Jelly to Soft Matter: Preparation and Properties-Exploring of Different Kinds of Hydrogels. University Chemistry, 2024, 39(9): 338-348. doi: 10.3866/PKU.DXHX202309046

    8. [8]

      Keying Qu ,  Jie Li ,  Ziqiu Lai ,  Kai Chen . Unveiling the Mystery of Chirality from Tartaric Acid. University Chemistry, 2024, 39(9): 369-378. doi: 10.12461/PKU.DXHX202310091

    9. [9]

      Yu SU , Xinlian FAN , Yao YIN , Lin WANG . From synthesis to application: Development and prospects of InP quantum dots. Chinese Journal of Inorganic Chemistry, 2024, 40(11): 2105-2123. doi: 10.11862/CJIC.20240126

    10. [10]

      Cuicui Yang ,  Bo Shang ,  Xiaohua Chen ,  Weiquan Tian . Understanding the Wave-Particle Duality and Quantization of Confined Particles Starting from Classic Mechanics. University Chemistry, 2025, 40(3): 408-414. doi: 10.12461/PKU.DXHX202407066

    11. [11]

      Hui Shi ,  Shuangyan Huan ,  Yuzhi Wang . Ideological and Political Design of Potassium Permanganate Oxidation-Reduction Titration Experiment. University Chemistry, 2024, 39(2): 175-180. doi: 10.3866/PKU.DXHX202308042

    12. [12]

      Zhenlin Zhou ,  Siyuan Chen ,  Yi Liu ,  Chengguo Hu ,  Faqiong Zhao . A New Program of Voltammetry Experiment Teaching Based on Laser-Scribed Graphene Electrode. University Chemistry, 2024, 39(2): 358-370. doi: 10.3866/PKU.DXHX202308049

    13. [13]

      Feng Liang ,  Desheng Li ,  Yuting Jiang ,  Jiaxin Dong ,  Dongcheng Liu ,  Xingcan Shen . Method Exploration and Instrument Innovation for the Experiment of Colloid ζ Potential Measurement by Electrophoresis. University Chemistry, 2024, 39(5): 345-353. doi: 10.3866/PKU.DXHX202312009

    14. [14]

      Yujia Luo ,  Yunpeng Qi ,  Huiping Xing ,  Yuhu Li . The Use of Viscosity Method for Predicting the Life Expectancy of Xuan Paper-based Heritage Objects. University Chemistry, 2024, 39(8): 290-294. doi: 10.3866/PKU.DXHX202401037

    15. [15]

      Tiejun Su . The Construction and Application of the Calculation Formula for Endpoint Error in Precipitation Titration: A Case Study of the Mohr Method. University Chemistry, 2024, 39(11): 384-387. doi: 10.12461/PKU.DXHX202402039

    16. [16]

      Zhuoming Liang ,  Ming Chen ,  Zhiwen Zheng ,  Kai Chen . Multidimensional Studies on Ketone-Enol Tautomerism of 1,3-Diketones By 1H NMR. University Chemistry, 2024, 39(7): 361-367. doi: 10.3866/PKU.DXHX202311029

    17. [17]

      Limin Shao ,  Na Li . A Unified Equation Derived from the Charge Balance Equation for Constructing Acid-Base Titration Curve and Calculating Endpoint Error. University Chemistry, 2024, 39(11): 365-373. doi: 10.3866/PKU.DXHX202401086

    18. [18]

      Bingliang Li ,  Yuying Han ,  Dianyang Li ,  Dandan Liu ,  Wenbin Shang . One-Step Synthesis of Benorilate Guided by Green Chemistry Principles and in vivo Dynamic Evaluation. University Chemistry, 2024, 39(6): 342-349. doi: 10.3866/PKU.DXHX202311070

    19. [19]

      Mengyao Shi ,  Kangle Su ,  Qingming Lu ,  Bin Zhang ,  Xiaowen Xu . Determination of Potassium Content in Tobacco Stem Ash by Flame Atomic Absorption Spectroscopy. University Chemistry, 2024, 39(10): 255-260. doi: 10.12461/PKU.DXHX202404105

    20. [20]

      Zian Lin ,  Yingxue Jin . Matrix-Assisted Laser Desorption/Ionization Mass Spectrometry (MALDI-MS) for Disease Marker Screening and Identification: A Comprehensive Experiment Teaching Reform in Instrumental Analysis. University Chemistry, 2024, 39(11): 327-334. doi: 10.12461/PKU.DXHX202403066

Get Citation
PDF
XML
Metrics
  • PDF Downloads(1795)
  • Abstract views(2143)
  • HTML views(27)

通讯作者: 陈斌, bchen63@163.com
  • 1. 

    沈阳化工大学材料科学与工程学院 沈阳 110142

  1. 本站搜索
  2. 百度学术搜索
  3. 万方数据库搜索
  4. CNKI搜索
Address：Zhongguancun North First Street 2,100190 Beijing, PR China Tel: +86-010-82449177-888
Powered By info@rhhz.net

/

DownLoad:  Full-Size Img  PowerPoint
Return