Pillared montmorillonite, as a representative of Sandwich like pillared interlayered clays ,caught many scientist"s attention not only because of its special structure of two-dimensional sheets but also its excellent activity of catalysis and adsorption. It is well documented that the method to prepare PILM, ion-exchanging, needed a long periods and was affected by many factors, and that the product had low thermal stability especially hydro-thermal stability which was the primary obstruction of its using in large-scale production. At the same time, PILM was well documented prepared with Na-montmorillonite, while there were a few documents about PILM prepared with Ca-montmorillonite. The large cost of remodel of Ca-montmorillonite to Na-montmorillonite was another obstacle of the application of PILM, while Ca-montmorillonite was widely distributed in nature, as a result, to prepare PILM with Ca-montmorillonite has practical significance. What"s more, PILM was mainly studied as a catalyst in oil refining process till now, but rarely documented in other catalysis reactions, especially in coal liquification filed which also needed high activity catalyst.

以柱撐蒙脫石為代表的具有&三明治&結(jié)構(gòu)的柱撐粘土礦物因其特殊的二維孔道結(jié)構(gòu)和優(yōu)良的催化和吸附性能近年來成為國(guó)內(nèi)外廣泛關(guān)注和研究的熱點(diǎn)亚洲一区免费视频，但是目前國(guó)內(nèi)外大量報(bào)道的PILM制備大多采用離子交換法91av免费，生產(chǎn)周期很長(zhǎng)九色911最新地址，影響因素很多欧美老年黄片，并且產(chǎn)物熱穩(wěn)定性不夠高色哟哟网站十区，特別是水熱穩(wěn)定性較差最色A片视频，這是其不能在實(shí)際中大規(guī)模生產(chǎn)和應(yīng)用的主要障礙，因此制備一種高穩(wěn)定性的PILM意義非常精品久久久久一级毛片；文獻(xiàn)中大量報(bào)道的都是鈉基蒙脫石合成的柱撐粘土礦物久久久久久精品，傳統(tǒng)的離子交換法必須將鈣基蒙脫石鈉化改型，其成本相當(dāng)高97无码免费人妻超级碰碰碰，而自然界中大量存在的卻是鈣基蒙脫石欧美激情A片在线播放，直接用鈣基蒙脫石合成柱撐粘土礦物有很現(xiàn)實(shí)的意義，但目前這方面的報(bào)道卻很少見；另外女生小穴自慰网站，迄今為止丝袜日韩无码激情视频，PILM作為催化劑的研究領(lǐng)域主要在石油的煉制中應(yīng)用，而在煤炭的液化中卻鮮有報(bào)道找一个黄色的网址能看毛片视频的，如果能在煤炭轉(zhuǎn)化領(lǐng)域應(yīng)用這一成果青草线观看免费观看视频，其影響也將是相當(dāng)大的。

Pillared montmorillonite, as a representative of Sandwich like pillared interlayered clays ,caught many scientist's attention not only because of its special structure of two-dimensional sheets but also its excellent activity of catalysis and adsorption. It is well documented that the method to prepare PILM, ion-exchanging, needed a long periods and was affected by many factors, and that the product had low thermal stability especially hydro-thermal stability which was the primary obstruction of its using in large-scale production. At the same time, PILM was well documented prepared with Na-montmorillonite, while there were a few documents about PILM prepared with Ca-montmorillonite. The large cost of remodel of Ca-montmorillonite to Na-montmorillonite was another obstacle of the application of PILM, while Ca-montmorillonite was widely distributed in nature, as a result, to prepare PILM with Ca-montmorillonite has practical significance. What's more, PILM was mainly studied as a catalyst in oil refinin g process till now, but rarely documented in other catalysis reactions, especially in coal liquification filed which also needed high activity catalyst.

以柱撐蒙脫石為代表的具有&三明治&結(jié)構(gòu)的柱撐粘土礦物因其特殊的二維孔道結(jié)構(gòu)和優(yōu)良的催化和吸附性能近年來成為國(guó)內(nèi)外廣泛關(guān)注和研究的熱點(diǎn)亚洲图片国产精品一区二区，但是目前國(guó)內(nèi)外大量報(bào)道的PILM制備大多采用離子交換法丰满美女视频一区二区三，生產(chǎn)周期很長(zhǎng)，影響因素很多亚洲天堂在线地址，并且產(chǎn)物熱穩(wěn)定性不夠高欧美性爱在性，特別是水熱穩(wěn)定性較差，這是其不能在實(shí)際中大規(guī)模生產(chǎn)和應(yīng)用的主要障礙插女人下面，因此制備一種高穩(wěn)定性的PILM意義非常www.日本子..com精品；文獻(xiàn)中大量報(bào)道的都是鈉基蒙脫石合成的柱撐粘土礦物，傳統(tǒng)的離子交換法必須將鈣基蒙脫石鈉化改型日韩手机自拍无码专区，其成本相當(dāng)高经典18岁黄片，而自然界中大量存在的卻是鈣基蒙脫石，直接用鈣基蒙脫石合成柱撐粘土礦物有很現(xiàn)實(shí)的意義操屄无码，但目前這方面的報(bào)道卻很少見黄色免费的网址；另外，迄今為止欧美丰满熟妇性XXXX，PILM作為催化劑的研究領(lǐng)域主要在石油的煉制中應(yīng)用国产美女人人操，而在煤炭的液化中卻鮮有報(bào)道，如果能在煤炭轉(zhuǎn)化領(lǐng)域應(yīng)用這一成果麻豆高中生第一次破处，其影響也將是相當(dāng)大的免费在线中文字幕。

Because its a retainable, bio-degradative and innoxious energy resource with high flash point, it aroused worldwide interest. In this research, alkali-catalysis and acid-catalysis were applied to prepare biodiesel from palm oils and palmitic acids respectively.

由于生物柴油各項(xiàng)性質(zhì)與石化柴油極為相似，可以作為石化柴油的替代品色区综合色区视频无码系列，具有可再生亚洲天堂在线视频www、可降解、無毒天堂在线欧美WWW、高閃點(diǎn)无码一区二区三区av免费、對(duì)環(huán)境友好等優(yōu)點(diǎn)，已引起許多國(guó)家廣泛重視免费黄色网站查询。

In the area of selective catalysis, they will soon publish the first examples of stereochemically thoroughly investigated Enantioselective Organo-Autocatalysis, a process that demonstrates conceptually new catalysis design strategy and also provides structurally well-defined small-molecule models that may help explain the origin and maintenance of homochirality fundamental to the functions of biological systems.

在相鄰的選擇性催化領(lǐng)域黄片你懂的，他們即將發(fā)表設(shè)計(jì)發(fā)現(xiàn)的首例有機(jī)小分子催化的高立體選擇性自復(fù)制過程（Enantioselective Organo-Autocatalysis），此類反應(yīng)不僅避免了繁瑣的催化劑和產(chǎn)物分離問題日韩男女AAA，更有意義的是充分利用了產(chǎn)物自身的催化功能亚洲久久，并為分子手性單一性這一生命體根本特征的起源和自發(fā)維持提供了第一個(gè)簡(jiǎn)潔的小分子模型系統(tǒng)2022黄色中文字幕在线观看。

At first, the method of determined tannase activity was established, catalysis kinetics, catalysis characteristcs of tannase and solubility of it in RM were also studied. At the same time, various of factors effecting tannase activity were investigated.

本課題在單寧酶菌種選育及單寧酶制備研究的基礎(chǔ)上，首次以反膠束體系為介質(zhì)国产精品又黄又大又硬，確立了有機(jī)相中單寧酶活力測(cè)定方法三级黄色韩国，研究了單寧酶在反膠束中增溶定位方式、催化動(dòng)力學(xué)和催化特性大黑吊插逼。

The main results are as follows:(1)In order to find out the catalysis character of pectinase and xylanse in bacillus circularise A_6 and exhibit their maxium catalysis rate,the optimum condition for determination of pectinase and xylanase activity in bacillus circularise A_6 was studied in aspect of pH,temperature,substance concentration,reaction time,anion concentration.

試驗(yàn)結(jié)果如下：(1)為探明環(huán)狀芽孢桿菌果膠酶及木聚糖酶的催化特性欧美性爱网在线看，更好發(fā)揮它們的催化性能，本文從pH值国产JJZZJJZZ在线观看、溫度亚洲影视在线、底物濃度、反應(yīng)時(shí)間亚洲综合在线综合、離子強(qiáng)度幾個(gè)方面研究了環(huán)狀芽孢桿菌A_6產(chǎn)生的果膠酶與小聚糖酶活性測(cè)定的最適方法九九一级A片。

This paper investigates the catalysis of D-72 strong acid cation exchange resin on the synthesis of acetals,and systematically discusses the influence of reaction factors on the catalysis reaction.

研究了強(qiáng)酸性陽離子交換樹脂對(duì)縮醛合成反應(yīng)的催化作用，系統(tǒng)地探討了各反應(yīng)因素對(duì)反應(yīng)的影響黄片强奸大全，研究發(fā)現(xiàn)女人av在线，D-72強(qiáng)酸性陽離子交換樹脂具有較高的催化活性，并能重復(fù)使用国产99社区。

Firstly SiO2 Sols were obtained by NH3H2O catalysis, or by HCl and NH3H2O catalysis in succession.

以NH3H2O催化和HCl與NH3H2O分步催化分別制備了膠粒帶負(fù)電荷的SiO2溶膠欧美日韩人妻一区二区三区。

Although many researchers have studied the synthesis of allyl phenyl ether by phase-transfer catalysis, no studies have used it in membrane reactor up to now. The purpose of this paper is to combine the studies of membrane reactor and phase-transfer catalysis. The membrane was used to stabilize the aqueous/organic interface at a fixed position, also the quaternary ammonium ion in the membrane was used as the catalyst to partake in the reaction system directly, and so it can also separate the product and reactants at the same time. A theoretical model is also presented.

中文摘要對(duì)於利用相間轉(zhuǎn)移觸媒催化技術(shù)來合成丙烯基苯基醚的反應(yīng)，已有不少專家學(xué)者研究過毛片一区二区三区免费观看18P，而至今還無在薄膜反應(yīng)器中進(jìn)行此反應(yīng)之研究影音先锋久久资源网AV资源站，本研究則是要結(jié)合薄膜反應(yīng)器與相間轉(zhuǎn)移觸媒兩者之特性，固定水油兩相之界面欧美性爱在线三区，并且利用薄膜上的四級(jí)銨離子為觸媒色欲色欲www图片，直接在反應(yīng)系統(tǒng)中參與反應(yīng)午夜免费一级，并同時(shí)分離產(chǎn)物及反應(yīng)物人人爱人人人操人人干，進(jìn)而推導(dǎo)出相關(guān)之理論模型。

Filtration, electrostatic colletion, chemical catalysis, ozone treatment and anion adsorption were all tried in application during the technical development. However, current techniques have the problems of relatively low purification rate, high costs, ect. So the reachers both here and abroad are now studying on the advanced purification methods like plasma and photo-catalysis techniques.

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