Abstract:
본 발명은 중간생성물의 선택도 모니터링을 통한 메탄올로부터 경질올레핀을 제조하는 순환유동층 공정의 효율적 운전에 관한 것으로, 구체적으로 디메틸에테르(DME) 선택도를 모니터링하여 사용된 촉매의 비활성화 정도를 예측하고 촉매 재생을 위한 공기 유량을 조절하여 최적화된 코크 정도를 유지시킴으로써 경질올레핀계 탄화수소의 생산성을 효과적으로 증진할 수 있고, 특히 에틸렌 및 프로필렌에 대한 우수한 선택성을 유지할 수 있는 방법에 관한 것이다.
Abstract:
The present invention relates to a catalyst for manufacturing 1,3- butadiene supported with a first metal oxide and a second metal oxide in silica, wherein the first metal oxide is a tantalum oxide and the second metal oxide is at least one selected from a group consisting of cerium oxide, nickel oxide, zirconium oxide and manganese oxide; and a manufacturing method for 1,3- butadiene using the same. Specifically, the catalyst of the present invention is practically applicable to a fixed bed reactor by selecting a silica mold carrier having an appropriate size and strength; impregnates tantalum oxide as the first metal oxide and cerium oxide, nickel oxide, zirconium oxide and manganese oxide as the second metal oxide; inhibits an occurrence of deactivation by minimizing the selectivity degradation of 1,3-butadiene as reaction time passes, which significantly improves the life expectancy of the catalyst as compared to an existing silica-based catalyst, thereby capable of being effectively used for the manufacture of 1,3-butadiene. [Reference numerals] (AA) Total transformation rate (%); (BB) Total transformation rate; (CC) Butadiene selectivity; (DD) Reaction time (hour); (EE) Butadiene selectivity (%)
Abstract:
PURPOSE: A catalyst for aqueous phase reforming reaction with a stable structure compared to that of a conventional catalyst and a manufacturing method thereof are provided to significantly increase a conversion ratio and a production rate of hydrogen and to provide hydrogen economically and environment-friendlily. CONSTITUTION: A catalyst for aqueous phase reforming reaction comprises a metal component carried in a mesoporous carbon carrier. The metal component is one selected from the group consisting of metals of VIIB group and VIII group. The mesoporous carbon carrier is manufactured by using a 3-dimensional mesoporous silica molecular sieve of one selected from the group consisting of SBA-1, SBA-6, SBA-16, FDU-5, KIT-6, and MCM-48.