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- Synthesis of dimethyfumarate( DMF) was studied with easterification of fumaric acid and methanol catalyzed by supported phospho tungstic acid catalyst( PW12). 以富马酸和甲醇为原料,用滑石分子筛固载磷钨酸催化合成富马酸二甲酯。
- In 1958, Ganzhou Concentration Plant was established and started its production. After 1963, tungstic acid, APT, W powder, WC powder and cemented carbide could be produced too. 1958年，赣州精选厂建成投产。1963年以后，进一步发展到生产钨酸、钨酸钠、仲钨酸铵、钨粉、碳化钨粉、硬质合金等。
- This paper introduces the digestion technology of mechanical activation in lieu of that of alkali boiling for manufacturing tungstic acid. 本文介绍在复盐法生产钨酸中用机械活化浸取工艺代替碱煮浸取工艺的新方法。
- The WO3 electrochromic film prepared from this doped four- member tungstic acid sol had excellent performance and uniformity. 由该配方钨酸溶胶制的WO3电致变色薄膜材料的成膜均匀，性能优良。
- Monodispersed tungstic acid nanoparticles with an average diameter of 20 nm were prepared by a ultra-violet light irradiation of oxotungsten-citrate complex aqueous solution. 以磷钨酸为光催化剂,在紫外灯照射下,对甲基橙溶液进行光催化降解,考察了几种阴阳离子对磷钨酸光催化降解甲基橙溶液的影响。
- A salt of tungstic acid. 钨酸盐钨酸的盐
- We are the mainly exporter of Tungstic acid in China, and the products enjoys the preferential treatment of “Quality Products without Inspection” offered by OSAKA Co., Ltd and JCQA Co., Ltd. in Japan. 公司生产的“石雁”牌仲钨酸铵、钨酸等产品获得“省部优级产品”、“福建省名牌产品”等称号，钨酸产品在国内是出口主要供货单位，享受日本 OSAKA 公司JCQA 公司“质量免检”待遇。
- Nitropyridine-N-oxide was synthesized with pyridine as original reactant through N-oxidation and nitration reactions, by using water as medium, tungstic acid and sulfuric acid as catalysts. 在N-氧化反应中,因用水作为反应介质,钨酸和硫酸为催化剂,不仅降低了反应成本,减少了环境污染,而且N-氧化吡啶的产率较高为96。
- Catalytic synthesis of glutaraldehyde with tungstic acid 钨酸均相催化法合成戊二醛
- We make superphosphate by reacting rock phosphate with sulphuric acid. 我们使磷酸盐岩同硫酸发生化学反应制造过磷酸钙。
- Keywords molybdic acid;tungstic acid;tungstates;ultraviolet spectroscopy.; 钼酸;钨酸;钨酸盐;紫外光谱学;
- Keywords tungstic acid;monodisperse;nanoparticles;UV-irradiation method; 钨酸;单分散;纳米颗粒;紫外辐照法;
- He gave me a taste of his acid wit. 他让我尝到了他敏锐尖刻之机智的滋味。
- Acid irritates the stomach lining. 酸能刺激胃黏膜。
- Keywords phosphato tungstic acid;p hydroxybenzoale;catalysis;esterification; 磷钨酸;对羟基苯甲酸酯;催化;酯化;
- Acid had pitted the surface of the silver. 酸把银器的表面腐蚀了。
- I am doing an experiment of neutralizing acid. 我在做一个中和酸的实验。
- Can Jones beat Smith? That's the acid test. 琼斯能击败史密斯吗？那是个严峻的考验。
- The phosphate also acts as a binder. 磷矿还起胶结剂的作用。
- We make superphosphate by react rock phosphate with sulphuric acid. 我们使磷酸盐岩同硫酸发生化学反应制造过磷酸钙。
