نتایج جستجو برای: silver catalyst
تعداد نتایج: 89016 فیلتر نتایج به سال:
The selective oxidation of alcohols to aldehydes has attracted a lot attention because its potential use in agrochemicals, fragrances, and fine chemicals. However, due homogenous catalysis, low yield, selectivity, hazardous oxidants, traditional approaches have lost their efficiency. co-precipitation method was used synthesize the silver-cobalt bimetallic catalyst supported on functionalized mu...
Abstract This work presents attempts to synthesize silver-doped copper nitride nanostructures using chemical solution methods. Copper(II) nitrate and silver(I) were used as precursors the oleylamine a reducing capping agent. Homogeneous Cu 3 N/Ag with diameter of ~ 20 nm obtained in one-pot synthesis by addition copper(II) salt precursor already-synthesized silver nanoparticles (Ag NPs). Synthe...
The electrochemical reduction of carbon dioxide to ethanol is a promising way make CO2 electrolysis economically feasible. In this work, bimetallic catalyst silver and copper synthesized, the effect its content on formation analyzed. By decreasing near-surface from 99 45% (measured by XPS) at current density −20 mA cm–2, Faradaic efficiency could be enhanced 5 23%. Moreover, we show that with e...
Density functional theory (DFT) was used to investigate the three-component coupling reactions of aldehydes, alkynes, and amines (A3 coupling) using N-heterocyclic carbene silver as catalyst. This study reveals that addition reaction between catalyst phenylacetylene (PAE) forms Ag_PAE. Subsequently, one hydrogen atom Ag_PAE migrates nitrogen Amine. Thereafter, amine aldehyde condensation genera...
The super-Brownian motion X % in a super-Brownian medium % constructed in DF96a] is known to be persistent (no loss of expected mass in the longtime behaviour) in dimensions one ((DF96a]) and three ((DF96b]). Here we ll the gap in showing that persistence holds also in the critical dimension two. The key to this result is that in any dimension (d 3); given the catalyst, the variance of the proc...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید