نتایج جستجو برای: methanol to propylene

تعداد نتایج: 10626131  

2017
Evon S Ereifej Seth M Meade Cara S Smith Keying Chen Nanette Kleinman Jeffrey R Capadona

Published reports of status epilepticus due to intraperitoneal injection containing propylene glycol in rats are sparse. In fact, there are no reports specifying a maximum safe dose of propylene glycol through intraperitoneal administration. We report here a case of unexpected seizures in Sprague Dawley rats after receiving an intraperitoneal injection containing propylene glycol. Nine-week-old...

2016
M. Kazemeini

Propylene is an important raw material and extensively used in the petrochemical industry. There has been a continuously growing demand for propylene in recent years around the world1–3. The majority of propylene is produced as a byproduct from processes such as steam cracking of naphtha and fluid catalytic cracking (FCC)4,5. Additional sources of propylene included dehydrogenation of propane, ...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 1996
M Hagedorn E W Hsu U Pilatus D E Wildt W R Rall S J Blackband

Successful cryopreservation of most multicompartmental biological systems has not been achieved. One prerequisite for success is quantitative information on cryoprotectant permeation into and amongst the compartments. This report describes direct measurements of cryoprotectant permeation into a multicompartmental system using chemical shift selective magnetic resonance (MR) microscopy and MR sp...

Journal: :Chemical Engineering Science 2022

This study presents a novel combination of microwave irradiation and structured zeolite/SiC foam catalyst to improve the methanol-to-hydrocarbons (MTH) process as well its environmental sustainability. Accordingly, ZSM-5/SiC was studied under at various reaction temperatures (400–550 °C) space velocities (8 12 h−1) compared conventional ZSM-5 pellets. promoted higher selectivity towards C1−C5 h...

Journal: :Chinese Journal of Catalysis 2022

Identification of the catalyst characteristics correlating with key performance parameters including selectivity and stability is to rational design. Herein we focused on identification property-performance relationships in methanol-to-olefin (MTO) process by studying detail catalytic behaviour MFI, MEL their respective intergrowth zeolites. The detailed material characterization reveals that b...

Journal: :Chemical Engineering Science 2021

Dimethyl carbonate (DMC) can be applied as a greener alternative to more hazardous materials, e.g. phosgene or dimethyl sulfate. Herein, one-pot synthesis of DMC from propylene oxide, methanol and CO2 using alkali halide catalysts under mild conditions was studied. Addition Zn powder the K2CO3-NaBr-ZnO catalyst system seen increase selectivity 19.8% (TOF = 39.0 h?1) 40.2% 78.1 at 20 bar 160 °C ...

2005
Kaoru Wakatsuki Jungho Kim Marc R. Nyden

Title of Dissertation: High Temperature Radiation Absorption of Fuel Molecules And An Evaluation of Its Influence on Pool Fire Modeling Kaoru Wakatsuki Doctor of Philosophy, 2005 Dissertation Directed By: Associate Professor, Jungho Kim Associate Professor, Greg Jackson Department of Mechanical Engineering Infrared absorption coefficients of various gas and liquid fuels (propane, nheptane, meth...

2009
E. Velasco B. T. Jobson H. Westberg

Eddy covariance (EC) flux measurements of the atmosphere/surface exchange of gases over an urban area are a direct way to improve and evaluate emissions inventories, and, in turn, to better understand urban atmospheric chemistry and the role that cities play in regional and global chemical cycles. As part of the MCMA-2003 study, we demonstrated the feasibility of using eddy covariance technique...

2003
E. MARK

Mean-square unperturbed dimensions {r2)0 and their temperature coefficient d In{r2)0/dT have been calculated for ethylene-propylene copolymers by means of the rotational isomeric state theory of chain molecules. Conformational energies required in the analysis are shown to be readily obtained from previous analyses of polyethylene and polypropylene, without additional approximations. Results th...

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