The influence of different precipitants on the copper-based catalysts for hydrogenation of ethyl acetate to ethanol
作者： Kaili Zhong , Xin Wang
DOI: 10.1016/J.IJHYDENE.2014.05.045
关键词: Inorganic chemistry 、 Catalysis 、 X-ray photoelectron spectroscopy 、 Copper 、 Ethanol fuel 、 Ethyl acetate 、 Ethanol 、 Dispersion (chemistry) 、 Hydrogenolysis 、 Chemistry
摘要: Abstract Ethanol fuel has become a hot topic in the economic, political, environmental, and scientific areas. In this work, new way for synthesis of ethanol by hydrogenolysis ethyl acetate is introduced impact different precipitants on catalysts systematically investigated several considerations, including dispersion effects, texture catalysts, copper phases surface layer reduced etc. These precursors are characterized inductively coupled plasma-atomic emission spectroscopy, N2-adsoption, X-ray diffraction, transmission electronic microscope, H2 temperature-programmed reduction photoelectron spectroscopy. It confirmed that choice precipitant great importance. The samples classified into two types, depending anion precipitant. Except catalyst prepared (NH4)2CO3, which low loading observed, type B (–CO32−) possess smaller particles larger BET than A (–OH), while difference same not obvious. Moreover, coexistence Cu+ Cu0 only detected catalysts. general, activity varies considerably with precipitant, following order: Na2CO3 ≥ NaHCO3 > NaOH ≥ KOH > (NH4)2CO3.
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