نتایج جستجو برای: methanol to propylene

تعداد نتایج: 10626131  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - پژوهشکده فنی و مهندسی 1388

asymmetric polyethersulfone (pes) microfiltration flat sheet membranes were composed by the phase inversion method (pim) and were used as supports. composite membranes were fabricated by coating silicone rubber as selective layer. effect of different concentrations of pes and pdms and different solvent such as nmp, dmf and dms effects as pes solvents and support thickness and different coagulat...

Journal: :Chemical communications 2010
Chao Sun Junming Du Jian Liu Yisu Yang Nan Ren Wei Shen Hualong Xu Yi Tang

A novel route is proposed for the preparation of mesopore containing zeolite ZSM-5 via in situ hydrothermal treatment of a solution containing alkali-dissolved SBA-15 containing carbonized surfactant P123 in the mesopores; it exhibited prominent stability enhancement for methanol to propylene reaction.

Journal: Polyolefins Journal 2018

Highly siliceous ZSM-5 nanocatalysts can dehydrate methanol to a wide range of hydrocarbons. In this study, the development of hierarchical H-ZSM-5 nanocatalysts (Si/Al=200) were reported for the methanol-toolefins (MTO) reaction. The nanocatalysts were prepared through a hydrothermal technique and treated by NaOH desilication. The parent and desilicated nanocatalysts were characterized using F...

Journal: :Chinese Journal of Catalysis 2022

Methanol to olefins (MTO) reaction as an important non-oil route produce light has been industrialized, and received over 80% ethylene plus propylene selectivity. However, achieve high single or selectivity towards the fluctuated market demand is still full of challenge. Small-pore SAPO-14 molecular sieve a rare MTO catalyst exhibiting extra-high It provides us valuable clue for further underst...

2013
Alexandra Ehlers Cory Morris Matthew D Krasowski

A rapid headspace-gas chromatography (HS-GC) method was developed for the analysis of ethylene glycol and propylene glycol in plasma and serum specimens using 1,3-propanediol as the internal standard. The method employed a single-step derivitization using phenylboronic acid, was linear to 200 mg/dL and had a lower limit of quantitation of 1 mg/dL suitable for clinical analyses. The analytical m...

Ali Taheri Najafabadi, masoumeh ghalbi-ahangary, Parviz Rashidi-Ranjbar Zahra Taheri

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...

Journal: :research journal of pharmacognosy 2014
m. hamzeloo-moghadam n. taiebi m. mosaddegh b. eslami tehrani s. esmaeili

improving the solubility of non-soluble herbal materials is an issue of interest in cell culture based experiments. evaluating the biological activity of these materials could become possible with the aid of cosolvents/surfactants which obviously should have little or no cytotoxic activity. in the present study, the cytotoxic activity of six cosolvents/surfactants: ethanol, methanol, tween 20 a...

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