نتایج جستجو برای: silica supported

تعداد نتایج: 229959  

Journal: :Helvetica Chimica Acta 2022

Tungsten oxo adamantylidenes (=Ad) are a new class of readily accessible alkylidenes, that opens the possibility to evaluate broader molecular and supported olefin metathesis catalysts. In this context, W(O)(=Ad)X2, with X=pyrrolide perfluoro-tert-butoxide, were grafted on partially dehydroxylated silica, generate corresponding silica-supported tungsten adamantylidenes. The high thermal stabili...

Journal: :Journal of environmental chemical engineering 2022

The Kigali Amendment to the Montreal Protocol limits global use of fluorinated greenhouse gases (F-gases) and encourages development a new generation refrigerants with lower warming potential. Therefore, there is need develop efficient sustainable technologies selectively capture recycle F-gases as environmentally refrigerants. Here, ionic liquids (ILs) high F-gas uptake capacity selectivity we...

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