Citation: Tian-hua YANG, Jia-xing LIU, Bing-shuo LI, Ying-mei ZHAI, Jian WANG, Bo-lin TONG. Effect of Ca modified HZSM-5 zeolites on catalytic pyrolysis of oil shale[J]. Journal of Fuel Chemistry and Technology, ;2021, 49(2): 137-144. doi: 10.19906/j.cnki.JFCT.2021033 shu

Effect of Ca modified HZSM-5 zeolites on catalytic pyrolysis of oil shale

College of Energy and Environment, Shenyang Aerospace University, Shenyang 110136, China

Corresponding author: Tian-hua YANG, thyang@sau.edu.cn
Received Date: 11 December 2019
Revised Date: 17 November 2020

Figures(8)

The catalytic behaviors of Ca-modified HZSM-5 during oil shale pyrolysis process were investigated in a tubular rector and by TG-MS-FTIR. The physicochemical properties of the molecular sieve were characterized by BET, NH₃-TPD, and TG. The results show that the molecular sieve can significantly increase yields of C₁₋₄ aliphatic hydrocarbons and reduce their evolution temperatures. After modified, Ca/HZSM-5 can reduce yields of CO₂, increase yields of shale oil and decrease lengths of aliphatic chains in shale oil. But Ca/HZSM-5 has a strong catalytic effect on aromatization. Brönsted acid sites have an obvious catalytic effect on aliphatic hydrocarbons, while Lewis acid sites are more targeted at aromatization process of pyrolysis products.
- oil shale,
- catalytic pyrolysis,
- HZSM-5,
- metal modified.
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