Nghiên cứu tổng hợp và đặc trưng xúc tác MgO, Co/SiO2 trong phản ứng Fischer-Tropsch ở áp suất thường

The catalyst samples MgO, 25 %Co/SiO2 with different content of  MgO have been prepared by incipient wetness impregnation method using Mg(NO3)2 solution and 25 %Co/SiO2 support. The catalyst was characterized by XRD, BET, TPD CO and TPR-H2 methods and atalytic activity was determined by Fischer-Tropsch synthesis reaction at ambient pressure. The obtained results show that the catalyst has the highest metal dispersal degree and reaction over this catalyst gave a higher C5+ product distribution than that of  25 %Co/SiO2

NGHIÊN CỨU QUÁ TRÌNH CACBON HÓA KHÔNG HOÀN TOÀN NGUỒN TINH BỘT NHẰM CHẾ TẠO XÚC TÁC ĐỂ TỔNG HỢP BIODIESEL TỪ DẦU HẠT CAO SU

Carbon based catalyst was prepared through partial carbonization of starch followed by sulfonation of product called “black powder” after the carbonization. The as-synthesized catalyst possessed very strong acid sites classified as a typical superacid assigned for –SO3H groups located by valance bonds on the catalyst surface. Some parameters such as carbonization temperature, time were controlled for optimizing the black powder properties and the catalyst activity. The catalyst was tested with rubber seed oil methanolysis in a batch process with reaction parameters such as temperature of 120oC, time of 5 hours, methanol/oil volume ratio of 1/1 and catalyst dosage of 10% oil weight. According to the partial carbonization optimizations, the conditions was temperature of 400oC, time of 90 minutes. The methyl ester yield after methanolysis was 95,8% proving favorable catalyst activity

NGHIÊN CỨU QUÁ TRÌNH CACBON HÓA KHÔNG HOÀN TOÀN NGUỒN TINH BỘT NHẰM CHẾ TẠO XÚC TÁC ĐỂ TỔNG HỢP BIODIESEL TỪ DẦU HẠT CAO SU

Carbon based catalyst was prepared through partial carbonization of starch followed by sulfonation of product called “black powder” after the carbonization. The as-synthesized catalyst possessed very strong acid sites classified as a typical superacid assigned for –SO3H groups located by valance bonds on the catalyst surface. Some parameters such as carbonization temperature, time were controlled for optimizing the black powder properties and the catalyst activity. The catalyst was tested with rubber seed oil methanolysis in a batch process with reaction parameters such as temperature of 120oC, time of 5 hours, methanol/oil volume ratio of 1/1 and catalyst dosage of 10% oil weight. According to the partial carbonization optimizations, the conditions was temperature of 400oC, time of 90 minutes. The methyl ester yield after methanolysis was 95,8% proving favorable catalyst activity

Bài tập và lời giải điện từ học

653 tr. ; 24 cm

Bài tập và lời giải điện từ học

653 tr. ; 24 cm

Bài tập và lời giải điện từ học

653 tr. ; 24 cm