نتایج جستجو برای: carbon molecular sieve membrane
تعداد نتایج: 1242210 فیلتر نتایج به سال:
Natural gas consumption has grown from 5.0 trillion cubic feet (TCF) in 1949 to 27.0 TCF in 2014 and is expected to be ;31.6 TCF in 2040. This large demand requires an effective technology to purify natural gas. Nitrogen is a significant impurity in natural gas and has to be removed since it decreases the natural gas energy content. The benchmark technology to remove nitrogen from natural gas i...
Zeolite and zeolite-like molecular sieves are being used in a large number of applications such as adsorption and catalysis. Achievement of the long-standing goal of creating a chiral, polycrystalline molecular sieve with bulk enantioenrichment would enable these materials to perform enantioselective functions. Here, we report the synthesis of enantiomerically enriched samples of a molecular si...
Preparative high pressure liquid chromatography on US-Y zeolite shape-selective molecular sieve was studied for carbon isotopic fractionation eects. We tested a standard mixture [17b, 21b(H)-hopane, 5a-cholestane] and complex natural hydrocarbon mixtures dominated by tetraand pentacyclic triterpenoids extracted from Oxford Clay shales. We con®rmed that steroids and hopanoids were separated on ...
Carbon molecular sieve membranes for selective CO2 separation at elevated temperatures and pressures
The “shuttle effect” of polysulfides hampers the commercialization lithium–sulfur (Li-S) batteries. Here, a thin molecular sieve film was decorated on surface an electrospun cellulose acetate (CA) membrane derived from recycled cigarette filters, where truncated cone structure ?-cyclodextrin (?-CD) selected as building block to physically and chemically trap while simultaneously dramatically sp...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید