A novel catalyst for higher alcohol synthesis from syngas: Co-Zn supported on Mn-Al oxide
A novel catalyst for higher alcohol synthesis from syngas: Co-Zn supported on Mn-Al oxide
复制标题
一种新型合成气合成高级醇催化剂：Mn-Al氧化物负载Co-Zn
DOI：
10.1016/j.fuproc.2018.04.006
复制
发表时间：
2018
影响因子：
7.5
通讯作者：
Fang Kegong
中科院分区：
文献类型：
--
作者：
Zhao Lu;Mu Xiaoliang;Yu Mingmao;Fang Kegong
采用溶胶-凝胶法合成了一系列不同Co/Zn摩尔比的锰单键氧化二氮化锌催化剂，用于合成气合成高醇。采用XRD、H2-TPR、n2吸附和解吸、CO2-TPD、CO-TPD、DRIFTS、H2-TPD、TEM、XPS、CO-TPSR等表征方法研究了催化剂的化学和物理性质。结果表明，CO转化率和醇选择性随CO /Zn摩尔比的变化而变化，这对合成的催化剂的性能有显著影响。适当的Co/Zn摩尔比可以提高催化剂中/强碱性位的浓度，提高催化剂表面未解离Co的数量，从而促进Co的插入，提高催化剂合成高醇的催化性能。其中，4co单键4zn催化剂对高等醇的选择性最高（80%）。
A series of the Cosingle bondZn catalysts supported on Mnsingle bondAl oxide with different Co/Zn molar ratios were synthesized according to the sol–gel method and used for higher alcohol synthesis from syngas. The chemical and physical properties of the as-synthesized catalysts were investigated by various characterization methods such as XRD, H2-TPR, N2adsorption and desorption, CO2-TPD, CO-TPD, DRIFTS, H2-TPD, TEM, XPS, and CO-TPSR. The results indicated that CO conversion and alcohol selectivity changed depending upon the Co/Zn molar ratio that significantly influenced the properties of the as-synthesized catalysts. The proper Co/Zn molar ratio can increase the concentration of moderate/strong basic sites, improve the amount of non-dissociated CO on the catalyst surface for CO insertion, and enhance the catalytic performance for higher alcohol synthesis. In particular, the 4Cosingle bond4Zn catalyst shows the highest selectivity to higher alcohols (80%) among all the catalysts.