Enhanced stability in the methanol-to-olefins process shown by SAPO-34 catalysts synthesized in biphasic medium

Characterization and optimization of SAPO-34 catalysts synthesized by mixed templates in MTO reaction

"> The effects of templating on the catalytic performance of SAPO-34 catalyst have been investigated in conversion of methanol to olefins. SAPO-34 <span style="font-size: 11pt; color: #000000; font-sty...

Methanol to olefins: activity and stability of nanosized SAPO-34 molecular sieves and control of selectivity by silicon distribution.

Nano-SAPO-34 molecular sieves synthesized in a microwave environment with 20 nm crystal size showed a longer lifetime than SAPO-34 prepared by the conventional hydrothermal method in the reaction of methanol to olefins. It has been found that silicon distribution strongly affects the lifetime and selectivity. Thus, silicon at the border of the silicon islands gives a higher lifetime and lower C...

The Synthesis of SAPO-34 at Different Crystallization Temperature and its Catalytic Performance for Methanol to Olefins Reaction

Kinetic Modelling of Methanol to Propylene Process on Cerium-hierarchical SAPO-34 Catalyst

In this paper, conventional SAPO-34 and Cerium Hierarchical SAPO-34 zeolites are synthesized using a hydrothermal method for methanol-to-propylene (MTP) reaction. The Ce-H-SAPO-34 catalyst shows a slightly larger crystal size, bimodal pore size distribution (microporous and mesoporous) and lower surface acidity compared to conventional SAPO-34 catalysts. According to these physicochemical prope...

risk taking in english to persian translation process by novice iranian translators

این پژوهش به بررسی ریسک پذیری مترجمان تازه کار در طی فرآیند ترجمه از زبان انگلیسی به فارسی می پردازد. پژوهش درباره مترجمان به عنوان اولین خواننده متن مبدا از اهمیت به سزایی برخوردار است. مترجمان تازه کار (و حرفه ای) در طی فرآیند ترجمه با مشکلات متعددی روبرو می شوند که باعث عدم اطمینان آنها از متن ترجمه شده می شود. با توجه به اینکه عدم اطمینان به انجام ریسک منتهی می شود، هدف این پژوهش بررسی کیفی...