金属（钼、钨、钛）碳化物催化剂：作为烃类干重整替代催化剂的合成与应用综述。

Metal (Mo, W, Ti) Carbide Catalysts: Synthesis and Application as Alternative Catalysts for Dry Reforming of Hydrocarbons-A Review.

机构信息

Department of Process Engineering and Chemical Technology, Faculty of Chemistry, Gdansk University of Technology, Narutowicza 11/12 St., 80-233 Gdansk, Poland.

出版信息

Int J Mol Sci. 2021 Nov 15;22(22):12337. doi: 10.3390/ijms222212337.

DOI:10.3390/ijms222212337

PMID:34830220

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8617837/

Abstract

Dry reforming of hydrocarbons (DRH) is a pro-environmental method for syngas production. It owes its pro-environmental character to the use of carbon dioxide, which is one of the main greenhouse gases. Currently used nickel catalysts on oxide supports suffer from rapid deactivation due to sintering of active metal particles or the deposition of carbon deposits blocking the flow of gases through the reaction tube. In this view, new alternative catalysts are highly sought after. Transition metal carbides (TMCs) can potentially replace traditional nickel catalysts due to their stability and activity in DR processes. The catalytic activity of carbides results from the synthesis-dependent structural properties of carbides. In this respect, this review presents the most important methods of titanium, molybdenum, and tungsten carbide synthesis and the influence of their properties on activity in catalyzing the reaction of methane with carbon dioxide.

摘要

烃类的干重整（DRH）是一种生产合成气的环保方法。它之所以具有环保特性，是因为使用了二氧化碳，二氧化碳是主要的温室气体之一。目前在氧化物载体上使用的镍催化剂由于活性金属颗粒的烧结或碳沉积物的沉积而迅速失活，从而阻塞了反应管中的气体流动。在这方面，人们非常需要新的替代催化剂。由于过渡金属碳化物（TMC）在 DR 过程中的稳定性和活性，它们有可能替代传统的镍催化剂。碳化物的催化活性源自于碳化物的合成依赖性结构特性。在这方面，本综述介绍了钛、钼和钨 carbide 合成的最重要方法及其性质对催化甲烷与二氧化碳反应活性的影响。