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Enhanced catalytic performance of Pd‐Ga bimetallic catalysts for 2‐ethylanthraquinone hydrogenation
Author(s) -
Wang Yunhao,
Peng Mao,
Ye Chenliang,
Gan Changna,
Zhang Jinli,
Guo Cuili
Publication year - 2019
Publication title -
applied organometallic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 71
eISSN - 1099-0739
pISSN - 0268-2605
DOI - 10.1002/aoc.5076
Subject(s) - bimetallic strip , catalysis , chemistry , chemisorption , adsorption , desorption , x ray photoelectron spectroscopy , dispersion (optics) , hydrogen peroxide , hydrogen , nuclear chemistry , chemical engineering , inorganic chemistry , organic chemistry , physics , optics , engineering
A series of Pd and Pd‐Ga bimetallic catalysts were prepared by a co‐impregnation method for 2‐ethylanthraquinone (EAQ) hydrogenation to produce hydrogen peroxide. Compared with 0.6Pd catalyst, the hydrogenation efficiency of 0.6Pd1.2Ga catalyst (11.9 g L −1 ) increases by 32.2%, and the stability of 0.6Pd1.2Ga catalyst is also higher than that of 0.6Pd catalyst. The structures of the samples were determined by N 2 adsorption–desorption, ICP, XRD, CO chemisorption, TEM, H 2 ‐TPR, in situ CO‐DRIFTS and XPS. The results suggest that incorporation of Ga species improves Pd dispersion and generates a strong interaction between Ga 2 O 3 and Pd interface or between Pd and support. DFT calculation results indicate that the strong adsorption of carbonyl group on Ga 2 O 3 /Pd interface facilitates the activation of EAQ and promotes the hydrogenation efficiency.