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Nickel Phosphide/Silica Catalysts for the Gas‐Phase Hydrogenation of Furfural to High–Added–Value Chemicals
Author(s) -
JiménezGómez Carmen P.,
Cecilia Juan A.,
MorenoTost Ramón,
MairelesTorres Pedro
Publication year - 2017
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.201700312
Subject(s) - furfural , furfuryl alcohol , catalysis , hydrogenolysis , phosphide , chemistry , nickel , desorption , inorganic chemistry , incipient wetness impregnation , coke , adsorption , chemisorption , selectivity , nuclear chemistry , organic chemistry
A series of Ni 2 P‐based catalysts supported on a commercial silica with a metallic Ni loading of 5–20 wt. % and an initial P/Ni molar ratio of 0–3 was prepared by incipient wetness impregnation. Catalyst precursors were reduced and characterized by using XRD, CO chemisorption, NH 3 temperature‐programmed desorption, N 2 adsorption–desorption at −196 °C, and X‐ray photoelectron spectroscopy and then tested in the gas‐phase hydrogenation of furfural. Almost full furfural conversion and a 2‐methylfuran yield of 73 % can be achieved with the Ni 2 P‐based catalyst with a Ni content of 15 wt. % at 190 °C after 5 h of time on stream. The high selectivity towards 2‐methylfuran is attributed to both the high hydrogenating capacity of the metallic sites to lead to furfuryl alcohol and the presence of reduced P species that favor the hydrogenolysis process. However, catalysts undergo deactivation along the catalytic test because of the formation of carbonaceous deposits in the form of coke and adsorption of reactants and/or products.