鉬和鉬化合物 的英文怎麼說
中文拼音 [mùhémùhuàgěwù]
鉬和鉬化合物
英文
molybdenum &molybdenum compounds-
The traditional catalyst used in acetal ( ketal ) synthetic reaction is strong inorganic acid. but there is some limits to its use because of its side reaction, strong erosion and liability to pollute the environment. molybdophosphoric acid is used as catalyst and three condensation products are prepared through the direct reaction of aldehydes ( ketones ) and ethylene. in addition, several elements of affecting the reaction is researched. it is proved that molybdophosphoric acid is very active as catalyst in less addition, the product yield is quite high and the quality of reuse is quite good
縮醛（酮）合成反應的傳統催化劑為無機強酸，但由於副反應多、腐蝕性強和易污染環境等缺點，其使用受到限制.用磷鉬酸為催化劑，通過醛（酮）與乙二醇直接反應得到了三種縮合產物.對影響反應的諸因素進行研究，結果表明，用磷鉬酸作催化劑，用量小，活性高，產品收率較高，且重復使用性能較好Abstract : the traditional catalyst used in acetal ( ketal ) synthetic reaction is strong inorganic acid. but there is some limits to its use because of its side reaction, strong erosion and liability to pollute the environment. molybdophosphoric acid is used as catalyst and three condensation products are prepared through the direct reaction of aldehydes ( ketones ) and ethylene. in addition, several elements of affecting the reaction is researched. it is proved that molybdophosphoric acid is very active as catalyst in less addition, the product yield is quite high and the quality of reuse is quite good
文摘:縮醛（酮）合成反應的傳統催化劑為無機強酸，但由於副反應多、腐蝕性強和易污染環境等缺點，其使用受到限制.用磷鉬酸為催化劑，通過醛（酮）與乙二醇直接反應得到了三種縮合產物.對影響反應的諸因素進行研究，結果表明，用磷鉬酸作催化劑，用量小，活性高，產品收率較高，且重復使用性能較好Chemical analysis methods for non - rare earth impurities of rare earth metals and their oxides - determination of molybdenum and tungsten content - inductively coupled plasma atomic emission spectrographic method and inductively coupled plasma mass spectrum method
稀土金屬及其氧化物中非稀土雜質化學分析方法鉬鎢量的測定電感耦合等離子體發射光譜法和電感耦合等離子體質譜法However, molybdenum wire multi - doped with k, al, si and rare earth oxide has not been studied yet
而對于復合摻雜k 、 al 、 si和稀土氧化物的鉬絲的研究至今仍無人問津。Inorganic - organic nanometer hybrid materials summarize the characteristics of inorganic material, organic material and nanomaterial, so they have new applications in many fields such as electronics, chemistry, catalyst, mechnics, biochemistry, etc. molybdenum trioxide which has good light sensitivity is widely used in preparing the photochromic and electrochromic materials
無機?有機納米雜化材料綜合了無機、有機和納米材料的優良特性，廣泛應用於電子、化學、催化、生物、機械等領域。三氧化鉬因具有優良的光學特性而被廣泛地用來研究制備光致、電致變色材料。In this article, molybdenum wire multi - doped with la2o3 and k, al, si, molybdenum wire doped with k, al, si and molybdenum wire doped with la2o3 or y2o3 are analyzed by dsc, hot - draw, sem, optical microscope, micro - hardness, x - ray and tem. it is found that multi - doped molybdenum wire is better at elevating the recrystallization temperature and improving the micro - structure and mechanic properties after recrystallization than molybdenum wire doped with k, al, si
本文通過差熱分析、熱模擬、掃描電鏡、金相顯微鏡、顯微硬度、 x射線衍射和透射電鏡等實驗手段對復合摻雜k 、 al 、 si和稀土氧化物的鉬絲、單摻雜k 、 al 、 si的鉬絲以及單摻雜稀土氧化物的鉬絲的再結晶溫度、高溫下的綜合力學性能和組織形貌進行了綜合對比分析。In order to further enhance the recrystallization temperature of molybdenum wire and improve its microstructure and properties, molybdenum wire doped with k, al, si ; molybdenum wire doped with rare earth oxide and molybdenum wire multi - doped with k, al, si and rare earth oxide are investigated. the mechanism of doped molybdenum wire is analyzed and proved
為了進一步提高鉬絲的再結晶溫度和優化鉬絲在高溫下的組織性能，本課題系統地研究了摻雜k 、 al 、 si的鉬絲、摻雜稀土氧化物的鉬絲以及復合摻雜k 、 al 、 si和稀土氧化物的鉬絲高溫下的組織和性能，並對于摻雜提高鉬絲的再結晶溫度和改善高溫下的組織性能的機理進行了深入地分析和實驗驗證。分享友人