Indexed by: Journal paper

First Author: Xian Li

Correspondence Author: Haoquan Hu

Journal: Energy & Fuels

Place of Publication: America

Discipline: Science

First-Level Discipline: Chemistry

Document Type: J

Volume: 87

Page Number: 508-513

ISSN No.: 0887-0624

Date of Publication: 2007-05-04

Abstract: Direct liquefaction of Shenhua bituminous coal was carried out in a 500 ml autoclave with iron catalyst and coal liquefaction cycle-oil as solvent at initial hydrogen of 8.0 MPa, residence time of 0–90 min. To investigate the liquefaction kinetics, a model for heating-up and isothermal stages was developed to estimate the rate constants of both stages. In the model, the coal was divided into three parts, easy reactive part, hard reactive part and unreactive part, and four kinetic constants were used to describe the reaction mechanism. The results showed that the model is valid for both heating