Study on the mechanism of co-catalyzed pyrolysis of biomass by potassium and calcium

Xiaojie Tian, Yunpu Wang, Zihong Zeng, Leilei Dai, Yujie Peng, Lin Jiang, Xiuhua Yang, Linqing Yue, Yuhuan Liu, Roger Ruan

Research output: Contribution to journalArticlepeer-review


The effects of K and Ca on the pyrolysis of rice straw were studied. The results showed that impregnating a certain amount of Ca is beneficial to the uniform distribution of K, and mixing a certain amount of K is also beneficial to the uniform distribution of Ca. Ca and K would combine with the silicon-aluminum compound in the sample during the pyrolysis and become invalid. Ca can effectively reduce the invalid K, but cannot completely protect K from combining with the silicon-aluminum compound. The binary metal carbonates K2Ca(CO3)2 and K2Ca2(CO3)3 were produced during the pyrolysis of the samples, which have a limited effect for the uniform distribution of the catalysts. In addition, acid-leaching removed most of the inorganic components in rice straw, which made it difficult for the catalyst to be evenly distributed, indicating that the inorganic components play an important role in evenly distributing the catalyst.

Original languageEnglish (US)
Article number124415
JournalBioresource Technology
StatePublished - Jan 2021

Bibliographical note

Funding Information:
This project is financially supported by the National Natural Science Foundation of China (No. 21766019), The Centrally Guided Local Science Technology Special Project (20202ZDB01012), Key Research and Development Program of Jiangxi Province (20171BBF60023), Natural Science Foundation of Jiangxi Province (20181BAB206030), Innovation and Entrepreneurship Development Fund of “Thousand talents program” Talent (1001-02102082).


  • Biomass
  • Calcium
  • Mechanism
  • Microwave-assisted catalytic pyrolysis
  • Potassium

PubMed: MeSH publication types

  • Journal Article

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