کاووس فلامکی
دانشیار مهندسی شیمی، دانشگاه صنعتی امیرکبیر (پلی تکنیک تهران)
[ 1 ] - بهینه‌سازی و اصلاح کاتالیست H-ZSM-5 توسط Na2CO3 جهت تبدیل متانول به بنزین
در این مقاله تبدیل متانول به بنزین توسط اصلاح خواص کاتالیست زئولیتی ZSM-5 بررسی می‌گردد. به منظور افزایش اسیدیته و بالا بردن تولید محصولات در محدوده نقطه جوش بنزین، کاتالیست Na-ZSM-5 که دارای Si/Al برابر 20 می‌باشد، ابتدا به فرم پروتونه در آمده (H-ZSM-5) و سپس در دمای ºC 75 در مجاورت محلول‌های Na2CO3 با غلظت‌های 05/0، 1/0 و 2/0 مولار قرار می‌گیرد. نتایج آنالیز XRF نشان می‌دهد که Si/Al به میزا...
[ 2 ] - Corrosion Properties of 70SiO2-15TiO2-15ZrO2 Ceramic Membrane
The 70SiO2-15TiO2-15ZrO2 membrane was prepared by a sol-gel procedure. The corrosion behavior of microporous toplayers along with the membrane characterization in terms of pore size, surface area, pore volume and weight loss is described. The final ceramic membrane with a thickness of 400 nm and uniform surface was obtained. This membrane confirmed the fine microporous characteristic with mean ...
[ 3 ] - A Systematic Study on the Effect of Desilication of Clinoptilolite Zeolite on its Deep-Desulfurization Characteristics
Natural clinoptilolite zeolite (CLP) in its original or metal ion- exchanged form (Ni2+) is a weak adsorbent for relatively large thiophene derivative molecules like benzothiophene (BT) and di-benzothiophene (DBT), due to its rather restricted micro-channel structure. A novelty of this work is that upon desilication treatments, it is possible to enhance the adsorption behavior of Ni2+-exchanged...
[ 4 ] - A New Mathematical Model for the Prediction of Internal Recirculation in Impinging Streams Reactors
A mathematical model for the prediction of internal recirculation of complex impinging stream reactors has been presented. The model constitutes a repetition of a series of ideal plug flow reactors and CSTR reactors with recirculation. The simplicity of the repeating motif allows for the derivation of an algebraic relation of the whole system using the Laplace transform. An impinging stream...
نویسندگان همکار