Dealcoholization temperature markedly influences the surface area and porosity of the resultant MAO-supports. When the support was pretreated at lower or higher temperature, the corresponding MAO-support shows very low surface area;2.XRD and IR analyses indicate that MAO has reacted with the residual ethanol in the supports, which is an important manner to get MAO fixed on the carrier. Morever, XPS analyse indicates that MAO can also be coordinated with MgCl_2, which is another way to get MAO fixed on the support;3.ICP and EDX analyses indicate that dealcoholization temperature not only determined the element content on the solid catalyst, but also influences the element distribution on the carrier;4.The activities of the supported phenoxy-imine catalysts and the properties of resultant polymers are strongly dependent on the dealcoholization temperature. The support (MSP-5) obtained by treating MgCl_2·2.56C_2H_5OH at 160℃for 4 h, then modified by MAO is very effective for immobilizing complex 3, the resultant solid catalyst (MSPC-5) shows very high activity in ethylene polymerization, and its kinetics of polymerization is stable during the reaction process. Finally, PEs with spherical morphology and high bulk density (over 0.35g/ml) were obtained, without reactor fouling;5.In this work, polymerization conditions such as alkylaluminums, Al/Zr ratio, temperature and H_2 had a pronounced effect on the activity of MSPC-5 and properties of PE;(3). New MgCl_2-Supported Single-Site Catalysts for Ethylene PolymerizationIn this work, a kind of new MgCl_2 support was obtained by anhydrous MgCl_2 co-milled with solid MAO, and it is a creative contribution. Then some single-site catalysts were supported on the new MgCl_2 support, and the resulted solid catalysts were tested in ethylene polymerization, the results indicated that:1.XRD and IR analyses indicate that MAO does be coordinated with MgCl_2, which is in good agreement with the results obtained by XPS;2.co-mlling time had no obvious effect on the texture of support after 12 hours;3.In this work, MgCl_2 was co-milled with solid MAO for different hours, and then complex 3 was supported on these co-milled supports. It was found that co-milling time markedly influences the activity of solid catalysts, but it had negligible effect on the kinetic profile and the properties of resultant PE.

XPS研究結(jié)果表明，MAO不僅僅只和乙醇作用一级一片A交，MAO還與MgCl_2本身有一定的作用欧美日本草逼，這是一個極為重要的發(fā)現(xiàn)；3www.黄色片com、通過ICP和EDX表征，發(fā)現(xiàn)載體的脫醇溫度直接影響著元素在固體催化劑中的含量及分布普通话对白刺激；4亚裔美女被黑人巨大进入、脫醇溫度極大地影響著負(fù)載苯氧基亞胺類催化劑的活性和聚合物的性能，特別是原始載體經(jīng)160℃活化4小時制備得到的固體催化劑MSPC-5的活性明顯高于其他脫醇溫度條件下制得的固體催化久操性综合手机在线视频，并且催化劑壽命長黄色网站在线观看不卡，表現(xiàn)出穩(wěn)定的動力學(xué)行為，最終獲得了高堆密度(大于0.35g／ml)的球形聚乙烯顆粒在线国产首页；5在线观看AV站网免费观看、本文選擇MSPC-5為研究對象，考察了聚合反應(yīng)參數(shù)對催化劑的活性及其聚合物的影響精品一级片免费，研究發(fā)現(xiàn)：不同的烷基鋁對催化劑具有非常重要的影響久在线草视频，特別足TIBA對MSPC-5的助催化活性最高国产一区二区视频www乱伦，烷基鋁的加入量有一個較佳值，聚合溫度為80度時活性最高午夜视频福利免费，H_2的加入使催化劑的活性明顯降低且聚合物的分子量也減猩线显谙叨；韩日性网、新型氯化鎂載體負(fù)載單活性中心催化劑催化乙烯聚合本文創(chuàng)造性采用固體MAO與無水氯化鎂直接進(jìn)行共研磨中国毛片网址是英文吗，制備出了一種的新型的氯化鎂載體，并將該載體用于多種單活性中心催化劑的負(fù)載化研究欧洲老妇交配，研究表明：1国产精品专区第102页、通過BET、XRD的表征宗合久网，再次證實(shí)了MAO與MgCl_2之間具有直接作用国语精品91自产拍在线，與XPS的研究結(jié)果相一致；2中文字幕一区二区观看、當(dāng)研磨時間高于12小時時国产女同一区二区在线视频，延長研磨時間對載體的結(jié)構(gòu)沒有顯著的影響；3在线免费视频91、將配合物3負(fù)載于共研磨時間不同的一系列載體上av黄色免费观看，乙烯聚合結(jié)果表明，盡管共研磨時間對負(fù)載催化劑的活性具有明顯的影響黄色网站进口免费，但是它對聚合物的性能以及催化劑的影響不明顯亚洲免费黄色网站视频。

Dealcoholization temperature markedly influences the surface area and porosity of the resultant MAO-supports. When the support was pretreated at lower or higher temperature, the corresponding MAO-support shows very low surface area; 2.XRD and IR analyses indicate that MAO has reacted with the residual ethanol in the supports, which is an important manner to get MAO fixed on the carrier. Morever, XPS analyse indicates that MAO can also be coordinated with MgCl_2, which is another way to get MAO fixed on the support; 3.ICP and EDX analyses indicate that dealcoholization temperature not only determined the element content on the solid catalyst, but also influences the element distribution on the carrier; 4.The activities of the supported phenoxy-imine catalysts and the properties of resultant polymers are strongly dependent on the dealcoholization temperature. The support (MSP-5) obtained by treating MgCl_2·2.56C_2H_5OH at 160℃for 4 h, then modified by MAO is very effective for immobilizing complex 3, the resultant solid catalyst (MSPC-5) shows very high activity in ethylene polymerization, and its kinetics of polymerization is stable during the reaction process. Finally, PEs with spherical morphology and high bulk density (over 0.35g/ml) were obtained, without reactor fouling; 5.In this work, polymerization conditions such as alkylaluminums, Al/Zr ratio, temperature and H_2 had a pronounced effect on the activity of MSPC-5 and properties of PE;(3). New MgCl_2-Supported Single-Site Catalysts for Ethylene Polymerization In this work, a kind of new MgCl_2 support was obtained by anhydrous MgCl_2 co-milled with solid MAO, and it is a creative contribution. Then some single-site catalysts were supported on the new MgCl_2 support, and the resulted solid catalysts were tested in ethylene polymerization, the results indicated that: 1.XRD and IR analyses indicate that MAO does be coordinated with MgCl_2, which is in good agreement with the results obtained by XPS; 2.co-mlling time had no obvious effect on the texture of support after 12 hours; 3.In this work, MgCl_2 was co-milled with solid MAO for different hours, and then complex 3 was supported on these co-milled supports. It was found that co-milling time markedly influences the activity of solid catalysts, but it had negligible effect on the kinetic profile and the properties of resultant PE.

XPS研究結(jié)果表明，MAO不僅僅只和乙醇作用欧美激情一区二区三区高清视频在线观看，MAO還與MgCl_2本身有一定的作用欧美在线黄片，這是一個極為重要的發(fā)現(xiàn)； 3蜜臀亚洲精品国产AⅤ综合第一、通過ICP和EDX表征黑人一級黃片，發(fā)現(xiàn)載體的脫醇溫度直接影響著元素在固體催化劑中的含量及分布； 4亚洲精选无码精品、脫醇溫度極大地影響著負(fù)載苯氧基亞胺類催化劑的活性和聚合物的性能字幕中文在线，特別是原始載體經(jīng)160℃活化4小時制備得到的固體催化劑MSPC-5的活性明顯高于其他脫醇溫度條件下制得的固體催化，并且催化劑壽命長精品国产一区二区亚洲人成毛片，表現(xiàn)出穩(wěn)定的動力學(xué)行為三级全黄的视频在线观看不卡，最終獲得了高堆密度(大于0.35g／ml)的球形聚乙烯顆粒； 5久久综合综合久久综合、本文選擇MSPC-5為研究對象中文字幕第一页在线，考察了聚合反應(yīng)參數(shù)對催化劑的活性及其聚合物的影響，研究發(fā)現(xiàn)：不同的烷基鋁對催化劑具有非常重要的影響，特別足TIBA對MSPC-5的助催化活性最高国产AⅤ精品一区二区四区，烷基鋁的加入量有一個較佳值国产原创第一页，聚合溫度為80度時活性最高，H_2的加入使催化劑的活性明顯降低且聚合物的分子量也減忻夥训娜锻贰日韩在线一区二区三区免费视频；、新型氯化鎂載體負(fù)載單活性中心催化劑催化乙烯聚合本文創(chuàng)造性采用固體MAO與無水氯化鎂直接進(jìn)行共研磨网站色色色色色，制備出了一種的新型的氯化鎂載體久久综合国产精，并將該載體用于多種單活性中心催化劑的負(fù)載化研究，研究表明： 1樱桃视频下载ios、通過BET免费视频黄片、XRD的表征，再次證實(shí)了MAO與MgCl_2之間具有直接作用国在线se视频，與XPS的研究結(jié)果相一致影音先锋每日全部新资源； 2、當(dāng)研磨時間高于12小時時999黄色com，延長研磨時間對載體的結(jié)構(gòu)沒有顯著的影響欧美性爱激情图区； 3、將配合物3負(fù)載于共研磨時間不同的一系列載體上www.激情小说，乙烯聚合結(jié)果表明黄色视频观看免费，盡管共研磨時間對負(fù)載催化劑的活性具有明顯的影響，但是它對聚合物的性能以及催化劑的影響不明顯欧美在线艹。

The electrocatalytic mechanism is discussed, which was due to the adsorption and the catalysis of functional groups at the electrode surface.

討論了電催化機(jī)理花蝴蝶视频在线观看，證明電極表面吸附及表面功能團(tuán)的催化是發(fā)生電催化的主要原因。

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18黄色网，催化燃燒是無焰燃燒亚洲日韩精品不卡在线，VOC與空氣進(jìn)行預(yù)混合后，均勻通過催化劑床層久久久免费性交毛片，在活性粒子的催化作用下實(shí)現(xiàn)燃燒国产极品在线观看无码迅雷下载，具有很高的燃燒效率，而且催化燃燒能顯著降低燃燒溫度插碰人人，避免了其燃燒時將空氣中氮?dú)馔瑫r氧化国产精美自拍视频91，形成氮氧化物，從而避免了酸雨的產(chǎn)生A片免费播放全部在线看。

The mechanism of electrocatalytic reduction, the classification and selection of electrode and catalyst and the effect of temperature, current density and pressure on the selective and Faradaic efficiency of reduction are discussed.

介紹了在水溶性介質(zhì)中利用電化學(xué)催化的方法還原CO2的研究現(xiàn)狀：電催化還原機(jī)理、電極材料催化劑的分類和選擇国产精品黄色视频一；綜述了溫度亚洲鸥美国产毛片、電流密度以及壓力等對還原選擇性和法拉第效率的影響；展望了CO2電催化還原方法的研究方向和應(yīng)用前景。

Nanosized CPF(Conjugated Polymer of Furfuryl alcohol)/ZnO composite catalyst was prepared through in-situ polymerization and heat conversion. The thermal stability, morphologies, size, structure and optical absorption properties of the CPF/ZnO material were characterized by TG-DTA, TEM, XRD, XPS, IR and UV-Vis techniques.

通過原位聚合-熱轉(zhuǎn)化兩步法无码黄片二三区，利用ZnO納米微粒和糠醇制備出了具有大共軛結(jié)構(gòu)的高分子和ZnO的納米復(fù)合催化材料欧美国产一级黄色。；用TG-DTA、TEM日韩精品国内直播在线观看网站、XRD1级片在线观看、XPS、IR和UV-Vis等技術(shù)對其熱穩(wěn)定性中文全毛片免费播放、形貌一级aaaaaa黄片、尺寸、結(jié)構(gòu)及吸光特性等進(jìn)行了表征中文日韩字幕一区二区三区，以亞甲基藍(lán)溶液的催化降解研究了該材料在自然光條件下的催化性能小视频无码专区网。

The catalysis of heteropoly acids in solid state has received much attention owing to their unique acidic and redox activities.

雜多酸作為固體酸催化劑以其優(yōu)異的催化性能被廣泛的應(yīng)用在酸催化和氧化催化的各種反應(yīng)體系中。

Both catalytic activity and selectivity of Ru(PPh_3)_3Cl_2 were improved in ionic liquid BMImPF_6/DME medium.The conversion of hexene and selectivity ofβ-adduct for the hydrosilylation reaction of 1-hexene with triethoxysilane catalyzed by Ru(PPh_3)_3Cl_2 in ionic liquid BMImPF_6DME (V/V=1/4) medium at 90℃were 100% and 89.0%,respectively.

實(shí)驗(yàn)結(jié)果表明综合久久久久久，在乙二醇二甲醚/離子液體1-丁基-3-甲基咪唑六氟磷酸鹽(BMImBF_6)(V/V =1/4)介質(zhì)中国产一级黄色网站在线，于90℃下，己烯與三乙氧基硅烷反應(yīng)的轉(zhuǎn)化率為100%日本男女欧美一级免费，β加成物的選擇性可達(dá)89.0%免费囯产黄片无级A，而用Rh(PPh_3)_3Cl作為反應(yīng)的催化劑，在純離子液體BMImPF_6中日本色色视屏，就可以高效催化烯烴與三乙氧基氫硅烷的加成反應(yīng)__级黄色视频，過渡金屬Rh(PPh_3)_3Cl，Ru(PPh_3)_3Cl_2催化劑/離子液體BMImPF_6催化體系啊啊啊插下面，不僅解決了產(chǎn)物與催化劑分離困難這一難題日韩内陆美洲无码AV，同時，離子液體BMImPF_6的存在提高了過渡金屬Rh(PPh_3)_3Cl精品人妖一区二区三区四区，Ru(PPh_3)_3Cl_2催化硅氫加成反應(yīng)的活性人人干在线国产视频，特別是β加成物的選擇性。

Moreover, high TONs (turnover numbers, TONs up to 1 000 000 for the reaction of iodobenzene with phenylboronic acid) for the palladium-catalyzed Suzuki-Miyaura cross-couplings were observed

同時中文字幕色哟哟，這種催化體系還可以達(dá)到很高的催化效率(碘苯和苯硼酸的催化效率甚至可以達(dá)到1000000)干日视频。

Those components that are highly distributed and have lower reduction temperature have higher catalytic activities.The activity evaluation results showed that with the intercalation of Isopoly and Heteropoly anions, the activity of the catalysts has been improved.

活性評價結(jié)果表明：對于CO催化燃燒反應(yīng)來說，雜多酸與同多酸陰離子的層間引入替換NO_3~-后AV狼友无码国产在线观看下载，在一定程度上提高了催化劑的催化活性日韩福利短片在线看免费视频播放网站，有利于CO的低溫催化氧化。