نتایج جستجو برای: light olefins
تعداد نتایج: 399881 فیلتر نتایج به سال:
Efficient syntheses of aldehydes and primary alcohols from terminal olefins are critical to the chemical laboratory and industry. Heavy emphasis has been placed on regioselective olefin functionalization in recent decades. This perspective mainly focuses on advances in the Wacker-type oxidation and tandem hydration of terminal olefins with anti-Markovnikov selectivity.
The SiO2 supported cobalt-iron nano catalysts were prepared by the sol-gel method. This research investigated the effects of (Co/Fe) wt.%, different Co/Fe ratio at different temperature and loading of KCl wt.% for Fisher-Tropsch synthesis (FTS). The results were showed that the catalyst containing 50 wt.% (Co/Fe)/SiO2 (Co/Fe ratio is 70/30) which promoted with 0.6 wt.% KCl is an optimal nano ca...
The control on product distributions in Fischer-Tropsch synthesis by feeding olefins in the n-paraffin solvent over a 20 wt.% Co/SiO2 catalyst under the typical reaction conditions of 503K, 2.1MPa, H2/CO = 2, and co-fed olefins 16 mol% in CO base in a trickle bed reactor has been studied. The selected co-fed olefins include 1-octene, 2-octene and 1-dodecene. Results showed that the addition of ...
Abstract Fossil-based production of plastics represents a serious sustainability challenge. The use renewable and biogenic resources as feedstocks in the plastic industry is imminent. Thermochemical conversion enables molecular building blocks materials from widely available resources. Waste cooking oil (WCO) significant fraction these This work provides insights into thermochemical fatty acids...
Oxidation reactions are highly important chemical transformations that still require harsh reaction conditions and stoichiometric amounts of chemical oxidants that are often toxic. To circumvent these issues, olefins oxidation is achieved in mild conditions upon irradiation of an aqueous solution of the complex [Ru(bpy)3 ](2+) and the enzyme laccase. Epoxide formation is coupled to the light-dr...
The development of synthetic methodologies which provide access to both stereoisomers of α,β-disubstituted olefins is a challenging undertaking. Herein, we describe the development of an operationally simple and stereoselective synthesis of difluoromethylated styrenes via a visible-light photocatalytic decarboxylation strategy using fac-Ir(ppy)3 as the photocatalyst. Meta- and para-substituted ...
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