نتایج جستجو برای: methanol to olefins mto
تعداد نتایج: 10625400 فیلتر نتایج به سال:
Due to its huge oil and gas reserves and access to open waters, Iran has considered the development of petrochemical products, including methanol, in the last decade; In such a way that the nominal production capacity of methanol in the country is about 9 million tons per year; According to investment plans in this industry until 1408, this number will arrive to 26 million tons yearly. due to t...
The nature and evolution of the hydrocarbon pool (HP) species during the Methanol-to-Olefins (MTO) process for three small-pore zeolite catalysts, with a different framework consisting of large cages interconnected by small eight-ring windows (CHA, DDR, and LEV) was studied at reaction temperatures between 350 and 450 °C using a combination of operando UV-vis spectroscopy and online gas chromat...
The methanol to olefins conversion over zeolite catalysts is a commercialized process to produce light olefins like ethene and propene but its mechanism is not well understood. We herein investigated the formation of ethene in the methanol to olefins reaction over the H-ZSM-5 zeolite. Three types of ethylcyclopentenyl carbocations, that is, the 1-methyl-3-ethylcyclopentenyl, the 1,4-dimethyl-3-...
A regioselective Heck reaction of aliphatic olefins and aryl bromides is realized at internal carbons of olefins. Methanol solvent promoted halide ionization from neutral arylpalladium halide complexes via hydrogen bonding, so as to create cationic aryl-Pd species for regioselective olefin insertion.
Abstract. SAPO-34 and ZnAPO-34 materials (Zn incorporated by isomorphic substitution in AlPO-34 material) were synthesized hydrothermal synthesis using triethylamine (TEA) as the structure directing agent (SDA). The presented both is to chabazite zeolite (CHA). However, they have different properties such textural (Z34 S34 a surface area of 485 603 m2/g, respectively), crystal sizes acid prop...
Methylrhenium trioxide (MTO) has the rare ability to stoichiometrically generate methanol at room temperature with an external oxidant (H2O2) under basic conditions. In order to use this transformation as a model for nonredox oxidative C-O coupling, the mechanisms have been elucidated using density functional theory (DFT). Our studies show several possible reaction pathways to form methanol, wi...
the history of plant’s used for mankind is as old as the start of humankind. initially, people used plants for their nutritional proposes but after the discovery of medicinal properties, this natural ?ora became a useful source of disease cure and health improvement across various human communities. berberis vulgaris is one of the medicinal plants used in iranian traditional medicine. berberis ...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید