نتایج جستجو برای: ethylene epoxidation

تعداد نتایج: 30626  

2010
Suljo Linic Phillip Christopher

Conventional solid metal catalysts, usually synthesized using wet impregnation strategies, are almost always quasi-spherical particles mainly terminated by low-energy surface facets, such as the (111) surface for fcc crystals and the (0001) surface for hcp crystals, and supported on high surface area materials. The diameter of these metal particles is from a few tens to a few hundreds of nanome...

2000
G. Wu D. Stacchiola M. Kaltchev W. T. Tysoe

Oxametallacycles have been previously grafted onto Ag(110) by adsorbing 2-iodoethanol to mimic possible intermediates in the catalytic epoxidation of ethylene. Since Ag(111) has been shown to be a good model catalyst for this reaction under realistic pressures of ethylene and oxygen, this work was extended to studying the chemistry of 2-iodoethanol on Ag(111) using temperature-programmed desorp...

The acidic group (-CO2H) of MultiWall Carbon Nanotube (MWCNT) converted to acyl chloride group (-COCl) producing of MVCNT@COCl. Then the reaction of MVCNT@COCl and MoO2(acac)2 resulted in direct immobilization of the MoO2(acac)2 and the formation of MVCNT@CO(acac)MoO2(acac) catalyst. In addition, the MVCNT@COCl was esterified...

2008
Phillip Christopher Suljo Linic

Introduction Approaching 100% selectivity in heterogeneous catalytic reactions is an ultimate objective of catalyst discovery and is critical for the design of efficient, environmentally friendly processes. This work focuses on an example where shape controlled synthesis of silver nano-particles has been utilized along with Density Functional Theory (DFT) calculations to design heterogeneous si...

Journal: :journal of sciences islamic republic of iran 0

mn(tpp)cl catalyzes cooxidation of olefin in the singlet oxygenation of sulfid. mn(tpp)cl is able to transfer an oxygen atom from a peroxidic intermediate generated in singlet oxygenation of sulfide to a metal ion affording metal 0x0 species which is responsible for epoxidation. this system leads to allcenes epoxidation such as styrene and cyclooctene. epoxidation of cyclohexene produces cycloh...

Journal: Gas Processing 2020

CO2 plays the most important role in pollution due to greenhouse gases, which causes global warming and climate change. Unfortunately, CO2 emission has increased significantly in recent decades. So, it is crucial to capture CO2. On the other hand, CO2 can be utilized for commercial products. There is plenty of CO2 utilization such as enhanc...

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