Catalyst Activity and Deactivation Mechanisms of C1-C4 n-Alcohols over HZSM-5 in Producing Fuel- Range Hydrocarbon

摘要

In recent years, renewable fuel from lignocellulosic biomass has attracted attention due to its potential environmental and economic benefits over crude oil [1]. In particular, production of fuel-range hydrocarbons from alcohols has generated increased interest because various alcohols can be produced from biomass via both thermochemical [2] and biological routes [3]. The development of zeolite synthesis and the discovery of a methanol-to-gasoline process by Mobil in the 1970s triggered interest in research and development arena to understand the reaction mechanisms of alcohols over zeolites, especially ZSM-5 [4]. Over the past few decades, detailed research on methanol conversion has been reported [5] and, more recently, research has been reported on the conversion of ethanol [6] and other alcohols. However, a comprehensive comparison of catalyst activity and the deactivation mechanism associated with the conversion of various alcohols over zeolites has not been reported. The present study report results for ZSM-5 hydrocarbon synthesis for experiments conducted with methanol, ethanol, 1-propanol, and 1-butanol and discusses the impact on the catalyst activity, reaction mechanism and the catalyst deactivation mechanism.