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- tungstic anhydrid 钨酐
- tungstic anhydride 钨酐,钨酸酐
- The submicro W and WC powder can be produced by using of violet tungstic. 用紫钨可以生产出亚微米级的钨粉和碳化钨粉。
- In this study，a co-monomer DAP wa s used in the process of maleic anhydrid e（MAH）solid grafting PP. 本文研究了共单体邻苯二甲酸二烯丙酯(DAP)在马来酸酐(MAH)固相接枝聚丙烯(PP)过程中的作用结果。
- 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。
- Is suitable in tungstic electrode welding rod weldings and so on argon arc welding and diameter 1.0- diameter 6 acidity, alkalinity, stainless steel. 适用于钨极氩弧焊及直径1.;0-直径6的酸性、碱性、不锈钢等焊条焊接。
- The new synthesis processes of dimethyl fumarate by fumarate, maleic anhydrid and furfural are studied, and the catalysts of reaction are discussed. 综述了由富马酸、马来酸酐及糠醛合成富马酸二甲酯的合成新工艺及所用催化剂的研究进展。
- 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 influence disciplinarian of scanning speed on tungstic electrode argon arc hardening effect on surface of boron cast iron was investigated. 研究了钨极氩弧扫描速度对硼铸铁表面硬化效果的影响规律。
- 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。
- Effect of tungstic electrode argon arc hardening parameters on microstructure and mechanical properties of boron cast iron surface was investigated. 研究了钨极氩弧扫描速度对硼铸铁表面硬化效果的影响规律。
- 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。
- Study is made of the process of violet tungstic oxide preparation and the influnce of APT raw material on the production of violet tungstic oxide are studied. 对紫色氧化钨的制取工艺、原料APT对紫色氧化钨生产的影响等进行了研究。
- A salt of tungstic acid. 钨酸盐钨酸的盐
- The application and research on the tungstic catalysts are reviewed in petroleum processing and petrochemicals, including hydrocracking, hydrofining, catalytic oxidation and acidic catalysis. 回顾了钨催化剂在石油炼制和石油化工新技术中的应用现状和研究进展,包括加氢裂化、加氢精制、催化氧化、酸催化等技术。
- 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。
- A new ester guerbet alcohol acetate is synthesized by using acetic acid and guerbet alcohol 2 octyl dodecyl alcohol in presence of catalyst phospho tungstic acid.The esterification ratio is 92.0 %. 本文以乙酸和2-辛基十二烷醇为原料，以磷钨酸为催化剂，合成了乙酸2-辛基十二烷醇酯，酯化率为92．0%25。
- tetrachlorophthalic tetrachlorophthalic anhydrid 四氯邻苯二甲酸酐; 四氯酞酸酐
