BaF(p -BDC) 0.5 as the Catalyst Precursor for the Catalytic Dehydrochlorination of 1-Chloro-1,1-Difluoroethane to Vinylidene Fluoride.

Autor:	Wang, Shucheng, Wang, Chuanzhao, Yu, Houlin, Yu, Wei, Liu, Yongnan, Liu, Wucan, Zhou, Feixiang, Yu, Wanjin, Wang, Jiuju, Zhang, Jianjun, Han, Wenfeng
Předmět:	DIFLUOROETHYLENE CATALYSTS LOW temperatures HIGH temperatures BARIUM fluoride PYROLYSIS
Zdroj:	Catalysts (2073-4344); Nov2021, Vol. 11 Issue 11, p1268, 1p
Abstrakt:	A BaF(p-BDC)0.5 catalyst was prepared by solid state reaction at room temperature with Ba(OH)2 as precursor, NH4F as F source, and H2(p-BDC) as organic ligand. The calcined samples were used as catalysts for dehydrochlorination of 1-chloro-1,1-difluoroethane to generate vinylidene fluoride (VDF) at 350 °C. Commercial production of VDF is carried out at 600–700 °C. Clearly, pyrolysis of the BaF(p-BDC)0.5 catalyst provided a promising way to prepare VDF at low temperatures. Prior to calcination, the activity of the BaF(p-BDC)0.5 catalyst was low. Following calcination at high temperatures, BaF(p-BDC)0.5 decomposed to BaF2 and BaCO3, and then the catalyst was chlorinated and fluorinated to BaClF, which showed high activity and stable VDF selectivity for dehydrochlorination of 1-Chloro-1,1-Difluoroethane to VDF. [ABSTRACT FROM AUTHOR]
Databáze:	Complementary Index
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