Synthesis of dimethyl carbonate over ZnO-TiO_2-SiO_2 composite catalysts
people who act as catalysts and assume the responsibility for managing the change process.
Metathesis of ethylene and 2-butylene to propylene over WO_3/SiO_2 catalysts
The amine hydrochloride is subsequently reacted with acetylene in the presence of mercury free catalysts to produce vinyl chloride.
The present paper covers the mechanism of coordination reaction of porphyrins with some metal ions studied by fluorometry and the catalytic mechanism of some catalysts.
The catalysts exhibited good adaptability to feedstock at high carbon space velocity, with higher conversion, little pressure drop over the bed, good tolerance to steam hydration, poisoning and coke formation, and good regeneratibility.
Enzymes are highly efficient and specific biochemical catalysts.
For modified hectorite catalysts the selectivity of by-products could be controlled around 45%, which make a big advancement from solid catalysts synthesized by SiO2.
The chemists have tinkered with heat and metal catalysts to refine their materials.
It is well known that all chemical conversions require catalysts, high pressure, or elevated temperature to occur.
Various FCC catalysts and relevant materials were ground by using SKR 80 sand grinder. The changes of zeolite crystallinity and particle size during grinding were found.
The plasma-prepared catalysts or catalysts modified by plasma exhibit higher catalytic reactivity.
Metal passivator can inhibit nickel and vanadium pollution on the catalytic cracking catalysts and improve the property of polluted catalysts.
The supported metal catalysts prepare by this method are superior in dispersivity and thermal stability.
Besides, the solid catalysts are immersed in liquid distillates, so the heat of exothermic reactions is immediately absorbed by vaporizing more liquid.
The conversion of -SH groups on the pore surface of the mercapto-functionalized mesoporous silicas with high hydrothermal stability to -SO3H gave rise to a series of solid acidic catalysts.
The review focuses on the different catalysts and craft on the hydrogenation of the major terpene: pinene, dipentene, citronellal citral, geraniol etc over catalysts and craft.
Uses: used Lanthanum tungsten, lanthanum molybdenum cathode materials, ternary catalysts, petrochemicals, gas lamps mantle additives, alloy, refractory metals.
However, it has many disadvantages, so the development of new types of catalysts with high efficiency is an important subject in the field of synthesis of carboxylic acid esters.
We found that in the 112 nanometer catalysts tested, the strong, moderate and weak sorption nanometer catalysts were 29,36 and 47 respectively by the haemagglutination test.
The antithesis of this view is to see translation as the provocation of cultural conflict with translators as the catalysts of culture clash.
Cyclohexane dehydrogenation over the platinum catalysts supported on carbon nanomaterials
We have a variety of long-term supply supply of used cars three catalysts, three-way catalytic waste, mainly cars have Toyota, Honda, Santana, Buick, Chevrolet, Chinese and so on.
The effects of catalysts on the bonding processing property and bonding strength of polyurethane adhesive were studied in this article.
The effects of reaction conditions and catalysts surface acidity on esterification reaction were investigated.
The cholera epidemics that overran Europe between 1830 and 1847 were catalysts for intensive infectious disease diplomacy and multilateral cooperation in public health.
The transition metal elements with various oxidation states could be introduced into the catalysts and mortify the performance of catalysts.
However, dendrimer catalysts are not easily synthesized and rare earth Lewis acid catalysts are easily deliquescence.
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