Open AccessSynthesis, characterisation, and evaluation of stable, efficient modified nanocopper‐based glycerol hydrogenolysis catalysts
Author(s) -
Lv Zhiguo,
Xie Zhipeng,
Guo Zhenmei,
Liu Xia,
Liu Pei
Publication year - 2017
Publication title -
micro and nano letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.25
H-Index - 31
ISSN - 1750-0443
DOI - 10.1049/mnl.2016.0710
Subject(s) - hydrogenolysis , catalysis , glycerol , phosphotungstic acid , dispersion (optics) , selectivity , adsorption , nuclear chemistry , scanning electron microscope , materials science , particle size , desorption , chemistry , chemical engineering , inorganic chemistry , organic chemistry , composite material , physics , optics , engineering
A series of CuO/SiO 2 catalysts containing different modifiers were prepared via co‐precipitation and used for glycerol hydrogenolysis. CuO–CeO 2 /SiO 2 gave the best glycerol conversion rate (100%) and highest selectivity for 1,2‐propanediol (up to 95%). Reactions were carried out under the following conditions: temperature, 220°C; H 2 pressure, 0.5 MPa; glycerol concentration, 100 wt.%; and H 2 /glycerol molar ratio, 35:1. The catalysts were characterised by X‐ray diffraction, NH 3 temperature‐programmed desorption, N 2 adsorption, and scanning electron microscopy. The CuO–CeO 2 /SiO 2 catalyst had smaller particle sizes, better dispersion, and greater specific surface area than the CuO/SiO 2 , CuO–phosphotungstic acid (PTA)/SiO 2 , and CuO–CeO 2 –PTA/SiO 2 catalysts.