نتایج جستجو برای: methanol to propylene

تعداد نتایج: 10626131  

Journal: :Zygote 2009
Alexandre Ninhaus-Silveira Fausto Foresti Alexandre de Azevedo Cláudio Angelo Agostinho Rosicleire Veríssimo-Silveira

SummaryWhile the freezing techniques of mammal embryos have been providing promising results, the cryopreservation of teleostean eggs and embryos have remained unsuccessful up to now. Therefore, this work aimed to develop a procedure of cryogenic preservation of embryos of Prochilodus lineatus and to observe, at both structural and ultrastructural levels, the morphological alterations that took...

Journal: :ChemistrySelect 2022

The conversion of end-of-life plastics to useful chemicals can contribute a resource-conserving and environmental-benign society. In this regard, we studied the depolymerization via methanolysis poly(1,2-propylene carbonate) using straightforward metal salts as precatalysts. more detail, in presence catalytic amounts Zn(OAc)2 or NaOAc methanol 1,2-propylene carbonate (generated by ring closing ...

2017
Yu Sang Aihua Xing Chuanfu Wang Zhihua Han Yulong Wu Cláudia Gomes Silva

Nanocrystal HZSM-5 zeolite aggregates with different SiO2/Al2O3 molar ratios were prepared under low temperature and were used to catalyze the conversion of methanol to propylene and butene. The coke location, coke content, and coke species deposited on HZSM-5 aggregates were investigated. The near-graphite carbon on the external surface of HZSM-5 zeolite (SiO2/Al2O3 molar ratio = 400) was dist...

2008
Mihkel Koel

Solvent effects on 2,6-dichloro-4-(2,4,6-triphenyl-pyridinium-1-yl)phenolate [ET (33) dye] and 7diethylamino-3,4-benzophenoxazine-2-one (Nile Red) in binary mixtures of organic solvents (acetone, acetonitrile, propylene carbonate, methanol and ethane-1,2-diol) with 1,3-dialkyl imidazoliumbased ionic liquids were studied by UV-visible spectroscopy. Highly nonlinear behaviour of mixtures of alcoh...

2006
Martin A. Abraham

Methanol, formaldehyde, carbon monoxide, and propylene conversion were examined in a laboratory flow reactor over three base-metal containing alumina-supported palladium (Pd) catalysts in addition to Pd on y-alumina catalyst. The base metals were cerium, barium, and a combination of the two. Experiments were performed to determine the effect of air to fuel ratio on lightoff temperatures of vari...

Journal: :Chemico-biological interactions 1984
Z Djurić J E Sinsheimer

Thymidine was reacted in methanol with four epoxides of varying mutagenicities: propylene oxide, glycidol, epichlorohydrin and trichloropropylene oxide. A single product was detected with each epoxide, and these products had the same retention times on silica high pressure liquid chromatography (HPLC). UV spectra of the products identified them as 3-alkylthymidines, and this was confirmed by in...

Journal: :Acta chimica Slovenica 2010
Sameh M K Aboul-Fotouh Marwa M I Hassan

This paper deals with maximizing dimethyl ether (DME) production from methanol due to its industrial importance as a future diesel fuel. The high acidity and the micro-porous structure of the catalysts encouraged this reaction. Catalysts containg 6% CuO supported on H-ZSM-5 and H-MOR zeolites give high activities for DME production. The 6% CuO/HMOR is more selective for DME production, while th...

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