Open AccessEffect of Double Transition Metal Salt Catalyst on Fushun Oil Shale Pyrolysis
Author(s) -
Xiaoyang Liu,
Haodan Pan,
Chuang Guo,
Xiaojing Di,
Hongxiang Hu
Publication year - 2020
Publication title -
scanning
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.359
H-Index - 47
eISSN - 1932-8745
pISSN - 0161-0457
DOI - 10.1155/2020/6685299
Subject(s) - catalysis , pyrolysis , oil shale , salt (chemistry) , chemistry , yield (engineering) , decomposition , transition metal , nuclear chemistry , hydrocarbon , aromatization , cracking , metal , organic chemistry , materials science , waste management , metallurgy , engineering
Shale ash (SA) as the carrier, the ratio of Cu to Ni in the Cu-Ni transition metal salt being, respectively, 1 : 0, 2 : 1, 1 : 1, 1 : 2, 0 : 1, the double transition metal salt catalyst (Cu m Ni n /SA) was prepared to explore the effect of such catalysts on the pyrolysis behavior and characteristics of Fushun OS. The research results show that the temperature ( T max ) corresponding to the maximum weight loss rate decreased by 12.9°C, 4.0°C, and 3.6°C; and the apparent activation energy decreased by 35.2%, 33.9%, and 29.6%, respectively, after adding catalysts Cu 0 Ni 1 /SA in pyrolysis. The addition of Cu 0 Ni 1 /SA and Cu 2 Ni 1 /SA further improves the shale oil (SO) yield of 3.5% and 3.1%, respectively. Cu 0 Ni 1 /SA produces more aromatic hydrocarbons, which, however, weakens the stability of SO and is of toxicity in use. After analyzing the pyrolysis product—semicoke (SC) and SO—with ATR-FTIR and GC-MS methods, Cu m Ni n /SA promotes the secondary cracking and aromatization of OS pyrolysis, increasing the content of the compound of olefins and aromatics in SO, and hastening the decomposition of long-chain aliphatic hydrocarbons to short-chain aliphatic hydrocarbons.