(23%) and oxygen (56%), and parts of germanium, lead, potassium, andsodium. Adding a small amount ofhydrofluoric acidcan effectively extract germanium encapsulated by silicon[36]. In recent years, scholars have found that germanium diodes can also be effectively leached by adding organic acids...
which also came into widespread use as a germicide for public water supplies. Presently the principal use of chlorine is in making chemical compounds. Important inorganic chemicals made by direct action
Co-culturing in this case is between different microorganism (fungi and bacteria) in the same medium. Sun et al. [151] carried out co-culture betweenAspergillus sydowiiandBacillus subtilis, and found seven new compounds which possess biological activities. Akone et al. [152] reported that, co-...
Simple 1,4-dioxane is a versatile aprotic solvent used for a variety of practical laboratory applications. It has a higher boiling range and is less toxic compared to tetrahydrofuran and hence used as a substitute for THF in some chemical processes. Owing to the presence of the oxygen atoms,...
63) is a powerful reaction for the introduction of oxygen in hydrocarbons. Oxygen can be used for the oxidation of ethene over a silver catalyst, but for all other alkenes hydroperoxides and related reagents are the source of oxygen to avoid further oxidation. As catalysts one can use ...
mixture using an oxygen-filled balloon were also performed, but these conditions did not significantly improve the reaction rate or the total conversion. Given that red light is part of the spectrum of white light, the use of increased reaction time could potentially also result in the photo...
Relates to the manufacture and use of the oxygen-containing heterocyclic compound or a nitrogen-containing heterocyclic compounds having insecticidal activity, which is formed by using a dialdehyde, or (C) the present invention provides a compound of formula (A), (B), (D a compound having a ...
found to be general and robust with remarkable functional group tolerance even in the presence of protonicNHfunctional group of the acryl amides substrates. A broad range of electronic and sterically differentiated substituted iodoarenes as well as heterocycles delivered the corresponding products in ...
Air, which (it is) a mixture of elements oxygen and nitrogen (and compounds) water and carbon dioxide, also (contains) small quantities of (many other) substances.()A.it isB.and compoundsC.containsD.many other的答案是什么.用刷刷题APP,拍照搜索答疑.刷刷题(
Proton hopping between oxygen atoms on the Brønsted acidic sites of zeolites and heteropolyacids has also been found to be associated with tunneling pathways52,53. In addition, it has been demonstrated that reactions based on heterogeneous catalysis, such as CO oxidation and NH3 formation on ...