In this paper, the effects of different catalyst combinations on the synthesis of α-chloro-dodecanoic acid were investigated, in which a series of acyl chlorides such as 4-toluene sulfonyl chloride, dodecanoyl chloride, chlorosulphonic acid , etc.

本文從烯酮式反應機理出發(fā)，以α-氯代十二酸的合成為模型日韩女优在线，對酰氯化試劑(對甲苯磺酰氯欧美肛交视频、十二酰氯、氯磺酸等)和質子酸催化劑(如H型離子交換樹脂美女被c视频、氯磺酸一区二区黄色大片、對甲苯磺酸、醋酸等)進行組合和選擇91人妻互换，并與文獻報道的特殊添加劑乙酐比較插的好爽视频，研究不同催化體系在酸催化合成α-氯代脂肪酸時的催化作用。

Homogeneous catalytic oxidations of organic substrates such as alkane and alkene catalyzed by m-oxo-bismetalloporphyrins and flexible alkoxyl oxygen linked-bismetalloporphyrins were introduced,and the catalytic mechanism of these two bismetalloporphyrins,along with the possible synergetic catalysis mechanism of binuclear central metal were discussed.

主要介紹了μ-氧代雙核金屬卟啉和以柔韌烷氧鏈相連的雙核金屬卟啉作為仿酶催化劑在均相催化烷烴久久人人操、烯烴等有機底物氧化方面的研究進展91在线人人艹，并對這兩類雙核金屬卟啉的催化機理一级A片国产孕妇、金屬雙核的協(xié)同催化作用機理作了論述www欧美性爱com，最后展望了雙核金屬卟啉仿酶催化劑的研究前景。

Based on the problem of various types of catalyst and according to the features of carbonylation catalysts reactions, our team has been designed a series of new metal complexes of benimidazoles, which can be used for carbonylation catalyst of industry. Seven new benzimidazole derivatives were prepared by the o-phenylenediamine欧美高潮抽搐免费A片大全、oxalic acid黄色手机网址在线观看、glycolic acid、monomethyl monopotassium malonate黄片视频兔费、ethyl cyanoacetate欧美一级婬片A片人杂交视、succinic anhydride. The structures of them were confirmed by IR、Elemental analsis. The crystal structures of d and e were determined by X-ray single crystal diffraction of Germanic Bruker Smart APEX II CCD. The catalysis of them was tested by carbonylation reactions.

本文設計以鄰苯二胺和草酸、羥基乙酸91绿帽论坛、丙二酸單甲酯人人操人人干人人做人人爱、氰基乙酸乙酯、丁二酸單甲酯為原料采用PPA催化和無機酸催化法亚洲A片免费视频在线观看，合成了4種苯并咪唑-2-羧酸衍生物并進行了表征人人妻人人妻人人妻；培養(yǎng)了2個化合物d、e的晶體并測定和討論了晶體結構可以直接在线观看的AV；制備了3種未見報道的苯并咪唑金屬配合物国产黄产在线视频，對配合物在羰基化法制醋酐-醋酸反應的催化作用進行了初步試驗。

Compared with conventional combustion, catalytic combustion is fameless, in which VOC is pre-mixed with air, then passes homogenously catalyst bed and burned efficiently. More significantly,because catalytic combustion may be performed under lower temperature, N2 in air is free of being oxidized into NOX, which is responsible for the formation of acidic rain ,at the same time when catalytic combustion happens.

與普通燃燒方式相比口工漫画纯彩无遮挡H动态图，催化燃燒是無焰燃燒91在线视频看看，VOC與空氣進行預混合后，均勻通過催化劑床層日韩人妻一级毛片基地，在活性粒子的催化作用下實現燃燒AV天堂久久天堂色，具有很高的燃燒效率，而且催化燃燒能顯著降低燃燒溫度丝袜美腿无码专区岛国4K，避免了其燃燒時將空氣中氮氣同時氧化免费观看黄色AⅤ片网，形成氮氧化物，從而避免了酸雨的產生中文字暮-色哟哟。

The results illustrate the facts that:(1) The best catalyst among them is manganous sulfate,(2) compound catalyst consisting of a mixture of metal sulfates in proper proportion is better than any one of them used alone.

本文研究的第二種脫硫新工藝是采用MnSO〓等催化劑使SO〓經過液相催化成SO〓進而形成稀硫酸97国产精品免费视频，實驗發(fā)現MnSO〓相對于ZnSO〓和〓有較好的催化作用，三者按一定比例組成的復合催化劑的催化能力優(yōu)于單組分的催化能力青青操五月丁香91。

According to studying the factors of using a series of rhodanine ramifications to determine metal ions by catalytic fluorescence method and by utilizing the strong catalysis of metal ions to potassium periodate oxygenating rhodanine, a catalytic fluorescence method of using the new type rhodanine ramifications to determine trace tin, antimony and cobalt was established.

首次研究了系列若丹寧衍生物在催化熒光法測定金屬離子中的各影響因素毛片一级A黄色片，利用痕量金屬離子對高碘酸鉀氧化若丹寧具有強烈催化作用的性質，建立了新型若丹寧物質催化熒光法測定痕量錫白白在线观看永久免费视频、銻亚洲一区久欧美一区日韩、鈷的新方法。

Utilizing the intense catalysis of metal ions to peroxide oxygenating rhodanine, a catalytic fluorescence method of using the new type rhodanine to determine trace iron, cobalt, copper, tin and antimony was established.

利用痕量金屬離子對過氧化氫氧化若丹寧具有強烈催化作用的性質看黄色大视频网站全在线观看，建立了一系列利用新型若丹寧物質催化熒光法測定痕量鐵插进去很舒服视频、鈷、銅男人和女人操逼网站、錫和銻的新方法色多多在线www免费观看；較系統(tǒng)研究了系列若丹寧衍生物在催化熒光法測定金屬離子的各影響因素，確定了反應的最佳條件色色色视频免费网址，計算了動力學參數免费看毛片的网址。

Based on a brief review of semiconductor photocatalytic mechanism and researches in the past 30 years on TiO2 heterogeneous photocatalysis, this paper emphasizes that the natural vanadiferous rutile and its modified products, which have not been investigated by either Chinese or foreign research groups, degrade halogenated organic contaminants. By means of grinding, heating in situ, heating, quenching and electron irradiation, the natural rutile could be modified.

在簡述半導體光催化理論及TiO2多相光催化作用近30年研究現狀的基礎上，重點對國內外一直處於空白狀態(tài)的天然含釩金紅石光催化性能進行研究一级片入口。

In this study, a new idea that RDF is made with catalysis of alkali,alkali earth or transition metal salts. The addition of the catalysts is to low ignition and burn off temperature temperature.

本課題提出在制備RDF過程中引入催化助燃劑的新思路一级二级性爱视频，這些催化助燃劑包括了許多堿或堿土金屬的化合物97视频免费在线，同時也考慮一些過渡金屬的催化作用。

By water contact angle meter, photocatalytic ability of several kinds or crystal form of TiO2 has been compared. In addition, OH and OH~ have been proved to be in existence on coating surface by FTIR.

通過接觸角儀比較了不同晶型和不同型號的納米TiO_2以及顏料級TiO_2光催化能力的差別在线不卡精品，并利用紅外光譜證實在納米級光催化涂料的表面產生了具有很強光催化作用的氫氧自由基哟色网站。