Catalytic depolymerization of a typical lignite for improving tar yield by Co and Zn catalyst.

ABSTRACT: A novel process for improving tar yield through catalytic depolymerization of a typical lignite was put forward. The catalytic depolymerization of the lignite over CoCl₂ and ZnCl₂ catalyst in different concentrations were investigated by a Gray-King apparatus. The optimal catalyst concentrations of CoCl₂ and ZnCl₂ catalyst that could obtain the highest tar yield was achieved, by which the tar yield increased about 20.3% and 6.6% compared with that of the raw coal, respectively. Different with the traditional catalytic pyrolysis process for which the tar yield decreased, more tar was produced by the catalytic depolymerization method. The GC × GC-MS analysis showed that the components of alkanes and two-ring aromatics in tar increased dramatically

SUBMITTER: Liang L 

PROVIDER: S-EPMC5663918 | biostudies-literature | 2017 Oct

REPOSITORIES: biostudies-literature