توجه: محتویات این صفحه به صورت خودکار پردازش شده و مقاله‌های نویسندگانی با تشابه اسمی، همگی در بخش یکسان نمایش داده می‌شوند.
۱Improvement of BiFeO3nanopowder as a catalyst by Sm–Eu and Sm–Cd co–doped on its structure for acetylation of benzyl alcohol
نویسنده(ها): ، ،
اطلاعات انتشار: اولین همایش ملی فناوری های نوین در شیمی و مهندسی شیمی، سال
تعداد صفحات: ۹
BiFeO3(BFO), Bi0.86Sm0.07Eu0.07FeO3 (BSEFO), and Bi0.86Sm0.07Cd0.07FeO3 (BSCFO) nanopowders were prepared by the sol–gel combustion method and their catalytic performance were evaluated in acetylation ofbenzyl alcohol. The physical chemical properties of catalysts were characterized by using XRD, FT–IR,scanning electron microscope (SEM), EDX and BET surface. was carried out over all the Efficient acetylation of benzyl alcohol nanopowders using acetyl chloride\acetonitrile at room temperature. Among the nanopowders, BSCFO showed the highest catalytic performance which lead to 89 percent of benzyl acetateformation, whereas the yield of benzyl acetate over BFO and BSEFO was 45 and 69 percent, respectively. Itwas found that partial substitution of Sm–Eu and Sm–Cd in bismuth ferrite improved the catalytic performanceand increased the specific surface area of the catalysts. A direct relationship was resulted catalytic performanceand surface of the catalysts, in that BSCFO with the highest surface area (111m2\g) exhibited the highest catalytic performance. The catalysts showed good reusability in the process. This study confirmed that the catalysts could be promising catalyst for acetylation of alcohols<\div>

۲Study of acetylation of benzylic alcohols over BiFeO3, Bi0.86Sm0.07Eu0.07FeO3, and Bi0.86Sm0.07Cd0.07FeO3 nano powders
اطلاعات انتشار: Iranian Journal of Catalysis، ششم،شماره۳، ۲۰۱۶، سال
تعداد صفحات: ۸
BiFeO3 (BFO), Bi0.86Sm0.07Eu0.07FeO3 (BSEFO), and Bi0.86Sm0.07Cd0.07FeO3 (BSCFO) nano powders were prepared by the sol–gel combustion method and the catalytic performances were evaluated in the acetylation reaction of benzyl alcohol. The physical chemical properties of the catalysts were characterized by using XRD, FT–IR, scanning electron microscope (SEM), EDX and BET surface. The efficient acetylation of benzyl alcohol was carried ­out over all the nano powders using acetyl chloride\ acetonitrile at room temperature. Among the nano powders, BSCFO showed the highest catalytic performance and the yield of benzyl acetate was 89, 45, and 69 percent over BSCFO, BFO, and BSEFO, respectively. Partial substitution of Sm–Eu and Sm–Cd in bismuth ferrite improved the catalytic performance and increased the specific surface area of the catalysts. A direct relationship resulted between the catalytic performance and the specific surface of catalysts, where BSCFO with the highest surface area (11.7m2\g) exhibited the superior catalytic performance. The quantitative yield for the acetate product also resulted for the acetylation of p–methyl benzyl alcohol, p–nitro benzyl alcohol and p–chloro benzyl alcohol on BSCFO. The catalysts showed good reusability in the process. The study confirmed that the catalysts could be promising for the acetylation of alcohols.
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