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A Brief History of Acid Chemistry


Connected at the center of the molecular structure, and the remaining 18 shared between octahedral MO angle, side, and distributed around the two tetrahedral (Figure 2). 3 Three schools of the five research centers and the French P. Souchay par Spitsyn a former Soviet Union and the United States Baker, who is known as acid of the three schools. Modern multi-acid chemistry has been developed into three major schools of the five research centers,[link widoczny dla zalogowanych], namely Japan, France, Russia, the United States and China, 69 J. In Japan, Sasaki University of Tokyo from the 20th century began 70 years heteropoly acid and crystal structure of the titration; in France, Jeannin long been engaged in multi-acid analysis; in the United Kingdom, N. In phosphate and molybdate solution in equilibrium, while the formation of sodium salts of heteropoly structure; in Germany, after following the Jahr,[link widoczny dla zalogowanych], J. Fuchs is mainly engaged in structural analysis of the same acid; in China, Chinese Academy of Sciences, Changchun Institute of Applied Chemistry, Fudan University with a four-circle x-ray diffraction, successfully resolved a number of rare earth heteropoly acids and heteropoly blue crystal. In the 20th century, 60 years ago, basically in the acid of the research phase of the College-style, not in industrial production due to play its proper value, so development is relatively slow. 70s from the 20th century, people gradually realize that acid compounds have many special properties, such as large size, high molecular weight, can store and deliver electronic, lattice oxygen in the solid internal migration, high thermal stability sex, strong acid and readily Brown Lunstad extraction. These special properties make them to be widely used in many fields. At present, more acid and has entered the cutting and assembly phase molecules; nano-structure, high degree of polymerization of anions, the sandwich-type anions, many new organic metal salt,[link widoczny dla zalogowanych], heteropoly blue acid supramolecular charge transfer, with two cis-end of a multi-acid and oxygen with an empty hemisphere structure anion compounds have been synthesized; number of new structures, new laws that greatly enriched the theory of acid base chemistry results; acid application is also great strides to move forward, in which acid-type heteropoly acid as the oxidation of reduced or dual function of a new catalyst has been a major breakthrough in the industry, for example, Japan took the lead in 1972 to 12 a tungsten silicate hydrate as the catalyst for industrialization and propylene success; 1982 to 12 molybdenum phosphoric acid as a catalyst, gas phase oxidation of methacrolein methacrylic acid; 1984 to 12 molybdenum phosphoric acid as a catalyst for isobutene hydration tert-butyl alcohol, the production scale of tons, to become the world attention of the advanced technology; 1986, with 12 tungsten phosphoric acid as a catalyst, THF system such as poly oxy ethylene glycol methyl 8 four projects were successful. Today,[link widoczny dla zalogowanych], more acid into the chemical and life sciences. Studies have shown that many multi-acid compounds with biological activity, such as high selectively inhibit the enzyme function, anti-tumor, anti-virus, anti-HIV infection. [SbW. O. ] A salt used in the French clinical treatment of AIDS. In addition,[link widoczny dla zalogowanych], more acid functional materials in new applications such as nonlinear optical materials, high-quality sub-conductor, magnetic properties of different materials such as V are exciting areas of ground-breaking work. At present, many acid chemistry has become involved in organic chemistry, biology, medicine, physics and materials science interdisciplinary field. Acid chemistry not only for its rich content in basic science research attention, and has shown broad prospects. In recent years, more than 10 articles and more acid chemistry research papers published in the journal Science, Nature J. Acid chemistry of the future mainly in two aspects J: (1) the application of acid compounds and function in the nature of research and development; (2) on the basis of chemical acid theory. Only to better integrate these two aspects, multi-acid chemical to get faster development. The old acid chemistry, has experienced a hundred years of change and development, has now entered a new era. If you use the word to summarize the molecular devices many features may not be an exaggeration of the J. In short, the more acid chemistry has drawn increasing attention.
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