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Synergistic Effect of a Boron‐Doped Carbon‐Nanotube‐Supported Cu Catalyst for Selective Hydrogenation of Dimethyl Oxalate to Ethanol
Author(s) -
Ai Peipei,
Tan Minghui,
Yamane Noriyuki,
Liu Guoguo,
Fan Ronggang,
Yang Guohui,
Yoneyama Yoshiharu,
Yang Ruiqin,
Tsubaki Noritatsu
Publication year - 2017
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201700821
Subject(s) - catalysis , boron , selectivity , chemisorption , inorganic chemistry , heteroatom , carbon nanotube , materials science , doping , chemical engineering , adsorption , chemistry , nanotechnology , organic chemistry , ring (chemistry) , optoelectronics , engineering
Heteroatom doping is a promising approach to improve the properties of carbon materials for customized applications. Herein, a series of Cu catalysts supported on boron‐doped carbon nanotubes (Cu/ x B‐CNTs) were prepared for the hydrogenation of dimethyl oxalate (DMO) to ethanol. The structure and chemical properties of boron‐doped catalysts were characterized by XRD, TEM, N 2 O pulse adsorption, CO chemisorption, H 2 temperature‐programmed reduction, and NH 3 temperature‐programmed desorption, which revealed that doping boron into CNT supports improved the Cu dispersion, strengthened the interaction of Cu species with the CNT support, introduced more surface acid sites, and increased the surface area of Cu 0 and especially Cu + sites. Consequently, the catalytic activity and stability of the catalysts were greatly enhanced by boron doping. 100 % DMO conversion and 78.1 % ethanol selectivity could be achieved over the Cu/1B‐CNTs catalyst, the ethanol selectivity of which was almost 1.7 times higher than that of the catalyst without boron doping. These results suggest that doping CNTs with boron is an efficient approach to improve the catalytic performance of CNT‐based catalysts for hydrogenation of DMO. The boron‐doped CNT‐based catalyst with improved ethanol selectivity and catalytic stability will be helpful in the development of efficient Cu catalysts supported on non‐silica materials for selective hydrogenation of DMO to ethanol.