Transfer of Monatomic and Biatomic Hydrogen in Quick Coal Liquefaction at High Temperature
1. Coal Engineering College, Shanxi Datong University, Datong 037003, China; 2. College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024,China
Abstract：Hydrogen transfer is crucially important for coal hydroliquefaction, so the understanding of the hydrogen transfer mechanism is of great significance to improve the coal liquefaction process. By examining the effect of pre-dissolved hydrogen, solvent types and different types of catalysts on the quick coal liquefaction at high temperature in a micro stirred reactor, this paper reveals the monatomic and biatomic hydrogen transfer mechanism during quick coal liquefaction at high temperature in a micro autoclave. The results show that the active hydrogen is mainly provided by monatomic hydrogen generated from solvent with tetralin and hydrogen as hydrogen resource. The effects of different catalysts on monatomic hydrogen donation of solvent are different under the condition of tetralin and nitrogen. In naphthalene and hydrogen, biatomic hydrogen needs a certain time to take part in coal direct liquefaction reaction. In tetralin, naphthalene and hydrogen, a certain amount of catalysts can quickly promote biatomic hydrogen to take part in the coal direct liquefaction reaction.
Luo Huafeng 1,Ling Kaicheng 2. Transfer of Monatomic and Biatomic Hydrogen in Quick Coal Liquefaction at High Temperature[J]. 化学反应工程与工艺, 2014, 30(2): 109-115.
