The aim of this work was to establish the effects of zeolite structure/chemical composition on the activity and selectivity of Cu-exchanged Y (Si/Al = 2.5), ZSM-5 (Si/Al = 12), and Mordenite (Si/Al = 10) for the oxidative carbonylation of methanol to DMC. Catalysts were prepared by solid-state ion-exchange of the H-form of each zeolite with CuCl and were then characterized by FTIR and X-ray abs...

catalysts with the formula of laco(1+x)o(3+δ), where 0 ≤ x ≤ 1, were studied for oxidation of co and c2h6 in a synthetic exhaust gas, comprising 6.0 % co and 0.2 % c2h6 in ar. ethane was selected as a model for hydrocarbons in the exhaust gas. the performance of catalysts is correlated to their properties, particularly their redox in oxidizing and reducing atmospheres. xrd patterns show perovsk...

Natural zeolites are available in Indonesia very large quantities and the market at affordable prices. The use of zeolite has developed various fields industry, water treatment wastewater treatment. study on ability local natural to adsorb copper from acidic a laboratory Tangerang been conducted. XRD data show that consists mordenite as main mineral quartz an accessory mineral. Acid activation ...

the stereospecific polymerization of conjugated dienes began in 1954 with the first catalysts obtained by combining ticl4 or ticl3 with aluminum-alkyls, i.e. the catalytic systems previously employed for ethylene and propylene polymerizations. subsequently, many other catalytic systems were obtained and examined by a combination of transition metal or lanthanide compounds with appropriate alkyl...

This paper shows the results of a study focused on evolution and properties mortars made with mixture portland cement (PC) natural mordenite (Mor). To begin, samples mordenite, sand were studied X-ray diffraction (XRD), fluorescence (XRF) granulometric analysis (GA). Next, ratio 75% PC 25% prepared to determine their initial final setting times, consistency density. Continuing, density, weight ...