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کاتالیزور کاربردی a: عمومی 2012
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همایش ، رویداد ، ژورنال
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  • catalytic decomposition of 4-phenoxyphenol to aromatics over pd/xcs2.5h0.5pw12o40/aca (x = 10, 20, 30, 40, and 50 wt%) catalysts

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    • تاریخ ارائه: 1392/07/24
    • تاریخ انتشار در تی پی بین: 1392/07/24
    • تعداد بازدید: 1188
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     activated carbon aerogel (aca) was prepared by a chemical activation of carbon aerogel using phosphoric acid (h3po4). a series of cs2.5h0.5pw12o40-impregnated activated carbon aerogels (xcs2.5h0.5pw12o40/aca) were prepared with a variation of cs2.5h0.5pw12o40 content (x) in order to provide acid sites to aca. palladium catalysts were then supported on cs2.5h0.5pw12o40-impregnated activated carbon aerogel (pd/xcs2.5h0.5pw12o40/aca, x = 10, 20, 30, 40, and 50 wt%) by an incipient wetness impregnation method for use in the decomposition of 4-phenoxyphenol to aromatics. 4-phenoxyphenol was used as a lignin model compound for representing 4single bondosingle bond5 linkage of lignin. cyclohexanol, benzene, and phenol were mainly produced by the decomposition of 4-phenoxyphenol. conversion of 4-phenoxyphenol and total yield for main products (cyclohexanol, benzene, and phenol) were closely related to the acidity of pd/xcs2.5h0.5pw12o40/aca. conversion of 4-phenoxyphenol and total yield for main products increased with increasing acidity of pd/xcs2.5h0.5pw12o40/aca. among the catalysts tested, pd/20cs2.5h0.5pw12o40/aca with the largest acidity showed the highest conversion of 4-phenoxyphenol and total yield for main products. conversion of 4-phenoxyphenol and total yield for main products over pd/20cs2.5h0.5pw12o40/aca were much higher than those over palladium catalyst supported on commercial activated carbon (pd/ac) and palladium catalyst supported on activated carbon aerogel (pd/aca).

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