TiO2-modified nano-egg-shell Pd catalyst for selective hydrogenation of acetylene--颗粒学报PARTICUOLOGY

Gao, J., Zhu, Q., Wen, L., & Chen, J. (2010). TiO2-modified nano-egg-shell Pd catalyst for selective hydrogenation of acetylene. Particuology, 8(3), 251-256. https://doi.org/10.1016/j.partic.2010.01.004

TiO₂-modified nano-egg-shell Pd catalyst for selective hydrogenation of acetylene

Jin Gao ^a, Qiufeng Zhu ^a, Lixiong Wen ^a *, Jianfeng Chen ^{a b}

a Key Lab for Nanomaterials, Ministry of Education, Beijing University of Chemical Technology, Beijing 100029, China
b Research Center of the Ministry of Education for High Gravity Engineering and Technology, Beijing University of Chemical Technology, Beijing 100029, China

10.1016/j.partic.2010.01.004

Volume 8, Issue 3, June 2010, Pages 251-256

Received 8 May 2009, Revised 16 September 2009, Accepted 18 January 2010, Available online 9 February 2010.

E-mail: wenlx@mail.buct.edu.cn

Highlights

Abstract

Pd-based egg-shell nano-catalysts were prepared using porous hollow silica nanoparticles (PHSNs) as support, and the as-prepared catalysts were modified with TiO₂ to promote their selectivity for hydrogenation of acetylene. Pd nanoparticles were loaded evenly on PHSNs and TiO₂ was loaded on the active Pd particles. The effects of reduction time and temperature and the amount of TiO₂ added on catalytic performances were investigated by using a fixed-bed micro-reactor. It was found that the catalysts showed better performance when reduced at 300 °C than at 500 °C, and if reduced for 1 h than 3 h. When the amount of Ti added was 6 times that of Pd, the catalyst showed the highest ethylene selectivity.

Graphical abstract

Keywords

Egg-shell nano-catalyst; Porous hollow silica nanoparticles; Modification; Selective hydrogenation; Acetylene

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