Oxides of carbon, sulfur, and nitrogen are important constituents of the atmosphere and are pollutants at higher levels. Of these, carbon dioxide, CO2, is the most abundant. It is a natural atmospheric constituent, and it is required for plant growth. However, as discussed in Chapter 15, ...
摘要: THE PREFERENTIAL CATALYTIC OXIDATION OF CARBON MONOXIDE IN THE PRESENCE OF HYDROGEN. I. THE ACTIVITY OF TWO WATER GAS CONVERSION CATALYSTS, OF COPPER OXIDE, OF MANGANESE DIOXIDE AND OF A MIXTURE OF THESE OXIDES - ResearchGateDOI: 10.1021/ja01365a001 被引量: 8 ...
Carbon and silicon are elements in Group IV. They both form oxides of the type XO2.(a) Silicon(IV) oxide, SiO2, has a macromolecular structure.(i) Describe the structure of silicon(IV) oxide.[3](ii) State three properties which silicon(IV ) oxide and diamond have in common.[3](iii...
通过埃灵罕姆图解释为何碳在高温下可以用作金属氧化物的还原剂。According to the Ellingham diagram, please explain why the carbon can be used as a reductant of the metal oxides at high temperature. b)100 kg的含20%B的合金在800℃平衡冷却到室温,最多能分离出多少纯A。 How many pure A can be ...
For a good performance of carbons as hydrogen sulfide adsorbents a proper combination of surface chemistry of carbon and porosity is needed. It was demonstrated that a more acidic environment promotes the formation of sulfur oxides and sulfuric acid despite yielding small H2S removal capacities. On ...
The cycling of carbon on Earth exerts a fundamental influence upon the greenhouse gas content of the atmosphere, and hence global climate over millennia. Until recently, ice sheets were viewed as inert components of this cycle and largely disregarded in
"Whenfossil fuel combustionoccurs, it not only releasescarbon dioxide(a greenhouse gas which leads to global warming) butcompoundslikenitrogen oxides,carbon monoxide, andparticulate matter(local air pollutants which lead to negative health outcomes in exposed communities)." ...
This carbon-based material has gained interest in developing sensors as it can decrease the overpotential and, in conjunction with metal oxides or metal nanoparticles to generate composites, can produce favorable electrochemical properties for voltammetric biosensing [77]. The experimental procedure for ...
zones of oxygenated water in marine environments oxidized aqueous Mn2+, enabling sedimentary deposits of Mn oxides and carbonates on a more widespread scale.43Although these broad, qualitative trends can be observed in Mn deposits in the geologic record, there has been no attempt to quantify changes...
Tropospheric ozone, also called environmental ozone, is a colorless gas that is mainly created through photochemical reactions of nitrogen oxides (NOx) and volatile organic compounds (VOCs) [10]. Additionally, soil and plants emit NOx and VOCs (biogenic sources) [11]. O3 is formed through reacti...