power to chemical energy of molecular hydrogen, reacting the hydrogen with a source of carbon to produce a hydrocarbon compound such as methane or methanol, storing the hydrocarbon compound, and then supplying the hydrocarbon compound as fuel to a generator which operates to generate electric power....
根据第一段Coal, oil, and natural gas produce carbon dioxide, which warms the earth when burned,Hydrogen produces pure water.煤、石油和天然气产生二氧化碳,燃烧时会使地球变暖,而氢产生纯水。可知,作为燃料,氢比石油具有的优点是它不太可能加剧全球变暖,故选B。 (2) 段落大意题。根据第二段While in ...
In the water-gas shift reaction, the carbon monoxide reacts with steam to obtain further quantities of H2. The WGSR also requires a catalyst, typically over iron oxide or other oxides. The byproduct is CO2.[7] Depending on the quality of the feedstock (natural gas, naphtha, etc.), one...
Additionally: The reaction occurs at460Kand2bar The initial moles are:2molesCO;3molesH2;1molesCH3OH What is theΔH298,in Joules/mole What is theΔG298in Joulesmol? For the following, you can answer in scientific ...
The oxidation of long chain alcoholic molecules leads to the formation of hydrogen and carbon dioxide, as well as alkanes as undesired by-products. On the other hand, short chain carboxylic acids (i.e., formic acid) and dicarboxylic acids (i.e., oxalic acid) are promptly mineralized to ...
The hydrogen production is basically conversion of one from of fuel or energy resource into another form of non-carbon fuel or energy carrier. Globally, over 95% of hydrogen is produced from hydrocarbons feedstock and about 4% is produced through electrolysis of water [27]. The hydrogen can be...
Beyond geometric structure, it is even more desirable to mimic the promotion mechanism of enzymes by tuning the weak interactions between the reactant and the environment12. Hydrogen bond plays a key role in enzyme catalysis especially for low-barrier hydrogenations13. For example, the amino acid...
In this study, ZIF-67 and ZIF-67 were used as precursors in order to fabricate metallic-doped N-enriched carbon successfully through a simple process of pyrolysis for applying the hydrogen evolution reaction. In addition, nickel was added to these structures in the course of the synthesis ...
Carbon–hydrogen bond activation in cyclopentadienyl dimethyl tungsten nitrosyl and carbonylBased on the presentation given at Dalton Discussion No. 4, 10–13th January 2002, Kloster Banz, Germany.Theoretical studies of inorganic and organometallic react ...
Reductive quenching of carbon nitride excited state is postulated in many photocatalytic transformations. However, the reactivity of this species in the turn over step is less explored. In this work, we investigate electron and proton transfer from carbon nitride that is photocharged to a various ...