نتایج جستجو برای: synthesis gas
تعداد نتایج: 647230 فیلتر نتایج به سال:
KCoMoS2 was supported on various carbon support materials to study the effect synthesis gas conversion. Next two activated carbons with high micropore volume, a traditional alumina (?-Al2O3) and its coated form (CCA) were studied for comparison. Coating increases selectivity alcohols, but AC-supported catalysts show even higher alcohol selectivities yields, especially at temperatures where conv...
در این پایان نامه ابتدا به توضیح و تشریح نظری درباره مواردی از قبیل لزوم اندازه گیری رطوبت در صنایع مختلف بویژه صنعت گاز و روشهای اندازه گیری رطوبت و نقش مواد نانو متخلخل در آن و کاربرد نانو متخلخل tio2 در این زمینه، خواص فیزیکی و شیمیایی موثر در سنتز و شناسایی، تعیین خصوصیات و بکار گیری این نوع نانو متخلخل جهت اندازه گیری رطوبت پرداخته شده است. در بخش تجربی و آزمایشگاهی نیز پس از سنتز متخلخل ...
چکیده ندارد.
A new cryochemical strategy of producing nanoparticles and polymorphous nanostructures of drugs is used, which is based on the dynamic combination of high and low temperatures, gas and solid phases, and inert carrier gases. This technology is applied to the synthesis of nanoparticles of steroid neurohormone dehydroepiandrosterone (DHEA). We have optimized the conditions of synthesis of the new ...
Fischer–Tropsch (FT) synthesis is a process in which synthesis gas (CO/H2) is catalytically converted into hydrocarbons and oxygenates via surface polymerizations. With this process, clean liquid fuels can be made from abundant natural gas reserves and renewable biomass sources, after first being converted to synthesis gas. In the last several decades, FT synthesis has attracted renewed attenti...
Primary evidence of the direct uptake of atmospheric CO2 and direct transformation into carbon nanotubes, CNTs, is demonstrated through isotopic labeling, and provides a new high yield route to mitigate this greenhouse gas. CO2 is converted directly to CNTs and does not require pre-concentration of the airbone CO2. This C2CNT (CO2 to carbon nanotube) synthesis transforms CO2-gas dissolved in a ...
The synthesis of singleand double-wall carbon nanotubes by gas flow-modified, catalyst-supported chemical vapor deposition (CCVD) is reported. We have investigated the gas flow condition dependence on the synthesis of carbon nanotubes (CNTs) by placing blocks in the CCVD reactor. Carbon nanotubes having large diameters are preferentially grown under turbulent flow conditions. This indicates tha...
The synthesis of metallic nanoparticles is an active area of academic and, more significantly, applied research in nanotechnology. Several methods have been introduced for the synthesis of these materials. The techniques for synthesizing aluminum nanoparticles can be divided into solidphase, liquid-phase and gas-phase processes. The solid-phase techniques include mechanical ball milling and mec...
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