萘在贵金属Pd、Pt 及Pd-Pt 催化剂上的加氢活性及耐硫性能

引用本文: 张小菲, 邵正锋, 毛国强, 何德民, 张秋民, 梁长海. 萘在贵金属Pd、Pt 及Pd-Pt 催化剂上的加氢活性及耐硫性能[J]. 物理化学学报, 2010, 26(10): 2691-2698. doi: 10.3866/PKU.WHXB20101006 shu

Citation: ZHANG Xiao-Fei, SHAO Zheng-Feng, MAO Guo-Qiang, HE De-Min, ZHANG Qiu-Min, LIANG Chang-Hai. Naphthalene Hydrogenation Activity over Pd, Pt and Pd-Pt Catalysts and Their Sulfur Tolerance[J]. Acta Physico-Chimica Sinica, 2010, 26(10): 2691-2698. doi: 10.3866/PKU.WHXB20101006 shu

萘在贵金属Pd、Pt 及Pd-Pt 催化剂上的加氢活性及耐硫性能

基金项目:
国家自然科学基金(20973029) (20973029)

中央高校基本科研业务费专项资金资助项目.

摘要:

采用等体积浸渍法制备了SiO₂-Al₂O₃ 负载的Pd、Pt 单金属催化剂及Pd/Pt 摩尔比分别为1:1、1:4、4:1 的双金属催化剂(Pd₁Pt₁、Pd₁Pt₄、Pd₄Pt₁), 对其进行X 射线衍射(XRD) 、透射电镜(TEM) 、CO 化学吸附和X 射线光电子能谱(XPS) 表征, 并详细考察了各催化剂的萘加氢活性和耐硫性能. 结果表明, 在实验考察范围内, Pd₄Pt₁ 催化剂上的萘转化率最高可达98.2%, 全饱和产物十氢萘选择性最高可达93.6%, 十氢萘反/顺生成率之比最高可达7.8, 均高于单金属Pd(97.5%, 59.1%, 4.3) 和Pt(96.8%, 39.9%, 2.9) 催化剂的值. 萘在三种催化剂上的加氢速率顺序为v_Pd₄Pt₁>v_Pd>v_Pt. 添加二苯并噻吩(DBT) 后Pd₄Pt₁ 上的萘转化率和十氢萘选择性仍然最高, 十氢萘反/顺比在Pt 催化剂上不受影响, 在Pd₄Pt₁ 催化剂上稍有降低, 而在Pd 催化剂上降低明显. 在三种不同Pd/Pt 摩尔比的双金属催化剂中, Pd₄Pt₁ 催化剂上的萘转化率和十氢萘选择性在添加DBT 前后都是最佳的.

关键词:

English

Naphthalene Hydrogenation Activity over Pd, Pt and Pd-Pt Catalysts and Their Sulfur Tolerance

1.
State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116012, Liaoning Province, P. R. China
Received Date: 06 May 2010
Available Online: 27 September 2010
Fund Project:
国家自然科学基金(20973029)

中央高校基本科研业务费专项资金资助项目.

Abstract:

Monometallic Pd and Pt as well as bimetallic Pd:Pt catalysts (Pd₁Pt₁, Pd₁Pt₄, and Pd₄Pt₁) with Pd/Pt molar ratios of 1:1, 1:4, and 4:1 supported on SiO₂-Al₂O₃ were prepared by incipient-wetness impregnation and characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), CO chemisorption, and X-ray photoelectron spectroscopy (XPS). Their catalytic activities toward naphthalene hydrogenation and the sulfur tolerance of these catalysts were investigated. We found that naphthalene conversion, selectivity toward decalin, and the trans-/cis-decalin yieldratio on Pd₄Pt₁were 98.2%,93.6%,and 7.8,respectively,which are higher than those on Pd(97.5%,59.1%, 4.3) and Pt (96.8%, 39.9%, 2.9). The rate of naphthalene hydrogenation on the three catalysts increased according to: v_Pd₄Pt₁>v_Pd>v_Pt. In the presence of dibenzothiophene (DBT), the naphthalene conversion and selectivity toward decalin for Pd₄Pt₁ were still the highest. The trans-/cis-decalin ratio was not affected on the Pt catalyst, but it did decrease slightly on Pd₄Pt₁ and it decreased observably on the Pd catalyst. The Pd₄Pt₁ catalyst also presented the highest naphthalene conversion and selectivity toward decalin among the three bimetallic catalysts studied in the presence and absence of DBT.

Key words:

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沈阳化工大学材料科学与工程学院沈阳 110142

萘在贵金属Pd、Pt 及Pd-Pt 催化剂上的加氢活性及耐硫性能

English

Naphthalene Hydrogenation Activity over Pd, Pt and Pd-Pt Catalysts and Their Sulfur Tolerance

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通讯作者: 陈斌, bchen63@163.com

中国化学会秘书处

萘在贵金属Pd、Pt 及Pd-Pt 催化剂上的加氢活性及耐硫性能

English

Naphthalene Hydrogenation Activity over Pd, Pt and Pd-Pt Catalysts and Their Sulfur Tolerance

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

CCS Chemistry：颜徐州、鲍哲南： 你的皮肤可能是一片SPMs

CCS Chemistry：工作高效不疲劳，只须让催化剂动起来

CCS Chemistry：静电组装导向聚合- 聚电解质纳米凝胶量化制备新策略

CCS Chemistry：金黄色葡萄球菌醛基脱氢酶是如何识别特异性底物的？

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