Abstract:
본 발명은 경질 올레핀 제조를 위한 MTO 반응에 사용되는 것을 특징으로 하는 Ti-SAPO-34 결정형 촉매 및 이의 제조방법을 제공한다. 또한, 상기 촉매를 이용하여 경질올레핀을 제조하는 방법 및 이에 의하여 제조되는 경질 올레핀을 제공한다. 본 발명에 따른 Ti-SAPO-34 결정형 촉매는 성능이 뛰어나고 수명이 길다는 효과가 있으며, 분포도가 균일하고 촉매의 결정성 및 수열안정성이 크게 향상되어 내구성이 좋은 효과가 있다. 나아가, 이를 이용하여 경질올레핀을 제조하는 경우 수율 및 생산성이 향상되는 효과가 있다.
Abstract:
PURPOSE: A titanium-SAPO-34 crystalline catalyst, a method for preparing the same, and a method for manufacturing light olefin using the same are provided to improve the productivity of the light olefin by improving the crystallinity and the hydrothermal stability of the catalyst. CONSTITUTION: A tetraethyl aluminohydroxide(TEAlOH) solution containing an organic templating agent and an alumina precursor is prepared. Phosphoric acid and water are mixed with the TEAlOH solution to obtain synthetic gel. A silica precursor and a titanium precursor are added in the synthetic gel, and a mixing operation is implemented. The mixed synthetic gel is aged and hydrothermal synthesized to obtain Ti-SAPO-34 gel. Non-reacted precursors are eliminated, and a drying operation is implemented. The Ti-SAPO-34 is plasticized.
Abstract:
Thiophene sulfonylurea derivs. of formula (I) are new. In the formula (I), R1=H, C1-3 alkyl, C1-3 haloalkyl, halogen, CN, C1-3 alkoxy, C1-3 haloalkoxy, NH2, NHCH3, N(Me)2, C1-2 alkyl substd. by C1-2 alkoxy, C1-2 haloalkoxy, SH, SCH3, CN or OH; R3=H or CH3; W=O or S; P= a gp. of formula (II), (III) or (IV). Pref. the cpds. (I) are methyltriazine-2-yl)amino carbonyl)-4-thiophene sulfonamide, aminocarbonyl)-3-(2-fluoromethyl-1,3-dioxyalane-2-yl)-4thiophene sulfonamide, etc. The cpds. (I) have a herbicidal activity.