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Journal of Rare Earths 2002年第4期20卷 268-272页

作者：王幸宜万颖卢冠忠李庭琛 Inst. of Indust. Catalysis East China Univ. of Sci. and Technol Shanghai 200237 China

The performance of severe oxidation of methanol on 0.1%Pd supported on alumina was studied by a combined device of chromatograph-micro reactor. The results show that the addition of La into γ-Al 2O 3 as support can affect the performance of Pd catalyst greatly. By using Pd catalyst containing La in methanol oxidation, though, the ignition temperature is not lower than that by using Pd catalyst, the presence of La does suppress the formation of oxygenic intermediates. The results by in-situ FTIR show that the presence of La in the support affects the adsorbed species and hence the mechanism of severe oxidation of methanol on Pd catalyst.

关键词： rare earths supported palladium catalyst methanol oxidation lanthanum

Silica-supported Arsine palladium（0） Complex： a Highly Active and Stereoselective catalyst for Arylation of Butyl Acrylate and Acrylamide

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Chinese Journal of Chemistry 2005年第4期23卷 443-447页

作者：蔡明中赵红胡文英 DepartmentofChemistry JiangxiNormalUniversityNanchangJiangxi330027China DepartmentofPharmacy GuangdongPharmaceuticalCollegeGuangzhouGuangdong510240China

A silica‐supported arsine palladium(0) complex has been prepared from γ‐chloropropyltriethoxysilane via im‐mobilization on fumed silica, followed by reaction with potassium diphenylarsenide and palladium chloride, and then reduction with hydrazine hydrate. The complex has been characterized by X‐ray photoelectron spectroscopy (XPS) and it is a highly active and stereoselective catalyst for arylation of butyl acrylate and acrylamide with aryl halides, affording a variety of trans ‐butyl cinnamates and trans ‐cinnamamides in high yields.

关键词： supported palladium catalyst arsine palladium(0) complex Heck arylation stereoselective synthesis

Effect of Lanthanum on Methanol Fuel Exhaust Deep Oxidation over palladium catalyst

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Journal of Rare Earths 2003年第1期21卷 51-54页

作者：王幸宜万颖卢冠忠 Institute of Industrial Catalysis East China University of Sci ence and Technology

The performance of deep oxidation of methanol on supported Pd catalyst was exami ned by a chromatograph-micro-reactor. The results show that the add ition of La into γ-Al 2O 3 support can affect greatly the performance of t he Pd catalyst. In the absence of CO, La can decrease the content of oxygen-c ontaining intermediate, although La can not lower the light-off temperature of methanol oxidation. In the presence of CO, La can lower the light-off tem perature, decrease the amount of CO adsorption, and weaken evidently 'CO inhibi tion' to the oxidation of methanol. By XPS technique, it is shown that La modi fies the electronic structure of Pd, which attributes to the modifications of th e catalytic performance.

关键词： supported palladium catalyst m ethanol oxidation lanthanum rare earths

Pd/silicalite-1: An highly active catalyst for the oxidative removal of toluene

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Journal of Environmental Sciences 2022年第6期34卷 209-219页

作者： Linke Wu Jiguang Deng Yuxi Liu Lin Jing Xiaohui Yu Xing Zhang Ruyi Gao Wenbo Pei Xiuqing Hao Ali Rastegarpanah Hongxing Dai Beijing Key Laboratory for Green Catalysis and Separation Key Laboratory of Beijing on Regional Air Pollution ControlKey Laboratory of Advanced Functional MaterialsEducation Ministry of ChinaLaboratory of Catalysis Chemistry and NanoscienceDepartment of Environmental Chemical EngineeringSchool of Environmental and Chemical EngineeringFaculty of Environment and LifeBeijing University of TechnologyBeijing 100124China

Catalytic combustion is thought as an efficient and economic pathway to remove volatile organic compounds, and its critical issue is the development of high-performance catalytic materials. In this work, we used the in situ synthesis method to prepare the silicalite-1(S-1)-supported Pd nanoparticles(NPs). It is found that the as-prepared catalysts displayed a hexagonal prism morphology and a surface area of 390-440 m^(2)/g. The sample(0.28Pd/S-1-H)derived after reduction at 500°C in 10 vol% H_(2)showed the best catalytic activity for toluene combustion(T50%= 180℃ and T90%= 189℃ at a space velocity of 40,000 m L/(g·hr), turnover frequency(TOFPd) at 160℃ = 3.46 × 10^(-3)sec^(-1), and specific reaction rate at 160℃ = 63.8μmol/(gPd·sec)), with the apparent activation energy(41 k J/mol) obtained over the bestperforming 0.28Pd/S-1-H sample being much lower than those(51-70 k J/mol) obtained over the other samples(0.28Pd/S-1-A derived from calcination at 500℃ in air, 0.26Pd/S-1-im derived from the impregnation route, and 0.27Pd/ZSM-5-H prepared after reduction at 500℃ in 10 vol% H_(2)). Furthermore, the 0.28Pd/S-1-H sample possessed good thermal stability and its partial deactivation due to CO_(2) or H_(2)O introduction was reversible, but SO_(2) addition resulted in an irreversible deactivation. The possible pathways of toluene oxidation over 0.28Pd/S-1-H was toluene → p-methylbenzoquinone → maleic anhydride, benzoic acid, benzaldehyde → carbon dioxide and water. We conclude that the good dispersion of Pd NPs, high adsorption oxygen species concentration, large toluene adsorption capacity, strong acidity,and more Pd~0 species were responsible for the good catalytic performance of 0.28Pd/S-1-H.

关键词： Silicalite-1 Hexagonal prism shape supported palladium catalyst Volatile organic compound Toluene combustion

Arylation of Allylic Alcohols with Aryl Iodides Catalyzed by a Silica-Bound Bidentate Sulfur palladium (0) Complex

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Chinese Chemical Letters 1998年第5期9卷 427-430页

作者： Cai, MZ Song, CS Huang, X Hangzhou Univ Dept Chem Hangzhou 310028 Peoples R China Jiangxi Normal Univ Dept Chem Nanchang 330027 Peoples R China

Allylic alcohols react with aryl iodides in the presence of tri-n-butylamine and a catalytic amount of a silica-bound bidentate sulfur palladium (0) complex to form 3-arylaldehydes or ketones in good yields.

关键词： supported palladium catalyst arylation allylic alcohol sulfur palladium complex