期刊
ASIAN JOURNAL OF CHEMISTRY
卷 25, 期 17, 页码 9473-9477出版社
ASIAN JOURNAL OF CHEMISTRY
DOI: 10.14233/ajchem.2013.15028
关键词
Modified activated carbon; Melamine; Gold catalyst; Acetylene hydrochlorination
资金
- State Key Development Program for Basic Research of China [2010CB234605, 2012CB720302]
- Program for Changjiang Scholars and Innovative Research Team in University [IRT1161]
A series of modified activated carbon (MAC) was prepared by impregnating with a aqueous solution of melamine and heating under N-o flow at diffferent temperatures. The surface structure of the prepared MAC was characterized by BET, elemental analysis, SEM, FT-IR and XPS. The results of the single carrier activity test showed that MAC exhibited higher activity than activated carbon. Characterization results indicated that the enhanced carrier performance of MAC could be attributed to the presence of nitrogen-containing groups. Subsequently, the supported gold catalysts Au/activated carbon and Au/MAC-0.8-650 were prepared by impregnating with a H[AuCl4] 4H(2)O solution which was dissolved in aqua regia. Under the reaction conditions of feed volume ratio V (HCl)/V (C2H2) = 1.15, temperature 180 degrees C, C2H2 hourly space velocity (GHSV) 360 h(-1) and gold loading of 0.2 wt %, the acetylene conversion and vinyl chloride monomer selectivity of Au/MAC-0.8-650 were 95 and > 99.91 %.
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