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In Situ Hybridizing Cu 3 (BTC) 2 and Titania to Attain a High‐Performance Copper Catalyst: Dual‐Functional Role of Metal‐Support Interaction on the Activity and Selectivity
Author(s) -
Yang Xu,
Zhang Zhaoxia,
Liu Wu,
Liang Tengda,
Dang Dai,
Tian Xinlong
Publication year - 2021
Publication title -
chemcatchem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.497
H-Index - 106
eISSN - 1867-3899
pISSN - 1867-3880
DOI - 10.1002/cctc.202100453
Subject(s) - calcination , catalysis , furfural , copper , nanoparticle , chemical engineering , lewis acids and bases , materials science , inorganic chemistry , dispersion (optics) , chemistry , nanotechnology , organic chemistry , metallurgy , physics , optics , engineering
Production of value‐added chemicals sourced from biomass platform molecules has tremendous significance for sustainable chemical engineering. Herein, we reported a successful fabrication of a highly dispersed copper nanoparticles catalyst, CuO#TiO 2 , via a facile route of in situ homogeneously hybridizing the metal organic framework Cu 3 (BTC) 2 with titania, and subsequent calcination. Distinctly from the copper catalysts prepared by the conventional routes (impregnation or co‐precipitation), this novel CuO#TiO 2 catalyst has a small particle size (∼5 nm), easy‐reducible copper species, and weakened Lewis's acidity. As a result, it shows superior high activity (∼20.8 mol FUR /mol Cu ⋅ h) as well as high furfural alcohol yield (>99 %) at 140 °C and 2 MPa for furfural hydrogenation. Moreover, the CuO#TiO 2 can be conveniently regenerated by calcination at 200 °C in the air, with no appreciable changes in its structure or activity, a test that we repeated 8 times. Through comprehensive structure characterizations, it has revealed a significant interaction between the CuO and TiO 2 originated from the in situ hybridization, which enables a bi‐functional effect on the resulted CuO#TiO 2 catalyst: one is to generate more copper active sites by promoting the copper dispersion and reducibility; the other is to hinder the side reactions by decrease the support Lewis acidity. This work demonstrates a practical strategy to rationally design a highly efficient catalytic system in furfural hydrogenation catalysis.