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Preparation of bifunctional Au-Pd/TiO 2 catalysts and research on methanol liquid phase one-step oxidation to methyl formate

Shi, Da, Liu, Jianfang, Sun, Rui, Ji, Shengfu, Rogers, Scott M., Connolly, Bethany M., Dimitratos, Nikolaos and Wheatley, Andrew E.H. 2018. Preparation of bifunctional Au-Pd/TiO 2 catalysts and research on methanol liquid phase one-step oxidation to methyl formate. Catalysis Today 316 , pp. 206-213. 10.1016/j.cattod.2018.01.033

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Abstract

A series of Au-Pd/TiO2 bifunctional catalysts with different Au, Pd loading percents have been prepared by sol-immobilization method. The related XRD, HR-TEM and XPS characterizations have been tested for understanding the structure of catalysts. The catalysis activity for methanol liquid phase one-step oxidation to methyl formate have been studied in batch reactor. The results show that the nanoparticles are highly dispersed on TiO2 with 6.4nm mean size. Also, bifunctional catalysts could catalysis transfer methanol to methyl formate with high efficiency. With 1wt%Au-1wt%Pd/TiO2 catalysts, when the molar ratio between active components and methanol is 1/2000, the conversion of methanol is 55.7% for 4h under 100oC and 25 bar. At the same time, the selectivity of methyl formate is up to 74.2%. The Au-Pd/TiO2 bifunctional catalysts also shows great stability for the reaction with stable conversion and selectivity after 5 cycles

Item Type: Article
Date Type: Publication
Status: Published
Schools: Cardiff Catalysis Institute (CCI)
Chemistry
Publisher: Elsevier
ISSN: 0920-5861
Date of First Compliant Deposit: 27 March 2018
Date of Acceptance: 27 January 2018
Last Modified: 31 Jan 2019 02:30
URI: http://orca.cf.ac.uk/id/eprint/110253

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