Selective Conversion of Glycerol to Methanol over CaO-Modified HZSM-5 Zeolite

Autor: Thachapan Atchimarungsri, Xinhua Gao, Kangzhou Wang, Qingxiang Ma, Jianli Zhang, Subing Fan, Fugui He, Jumei Tian, Prasert Reubroycharoen, Tiansheng Zhao
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: Molecules, Vol 27, Iss 21, p 7221 (2022)
Druh dokumentu: article
ISSN: 27217221
1420-3049
DOI: 10.3390/molecules27217221
Popis: Biodiesel is generally produced from vegetable oils and methanol, which also generates glycerol as byproduct. To improve the overall economic performance of the process, the selective formation of methanol from glycerol is important in biodiesel production. In the present study, a CaO modified HZSM-5 zeolite was prepared by an impregnation method and used for the conversion of glycerol to methanol. We found that the 10%CaO/HZSM-5 with Si/Al ratio of 38 exhibited highest selectivity to methanol of 70%, with a glycerol conversion of 100% under 340 ℃ and atmospheric pressure. The characterization results showed that the introduction of a small amount of CaO into the HZSM-5 did not affect the structure of zeolite. The incorporation of HZSM-5 as an acidic catalyst and CaO as a basic catalyst in a synergistic catalysis system led to higher conversion of glycerol and selectivity of methanol.
Databáze: Directory of Open Access Journals
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