The improved activity of n-octane hydroconversion over PMo and Ni in situ encaged in the secondary pores of nano HZSM-5 can be attributed to the increase of acidic concentration and the synergistic effect of Bronsted and Lewis acid sites.

原位合成法和浸漬法制備的復(fù)合催化劑在辛烷臨氫轉(zhuǎn)化反應(yīng)中活性的改善源于總酸量的增加及Brφnsted和Lewis酸的協(xié)同效應(yīng)。

Due to the ring strain and Lewis acid character, silacyclobutanes and silacyclobutenes can undergo ring expansion reactions to afford five- and six-membered silacycles, or ring opening to give organosilicon molecules and materials as well as fulfill organic transformations under very mild conditions.

硅雜環(huán)丁烷和硅雜環(huán)丁烯由于存在環(huán)張力和具有一定的Lewis酸性国产精品人人爽人人做，能夠通過擴(kuò)環(huán)反應(yīng)生成五元和六元含硅雜環(huán)化合物黄色网站免费永久，也能夠通過開環(huán)反應(yīng)生成不同結(jié)構(gòu)的有機(jī)硅分子和聚合物，抑或?qū)崿F(xiàn)有機(jī)反應(yīng)在溫和條件下的轉(zhuǎn)化一级不卡黄片。

In fact, we had obtained polythiophene films with high quality in BF3 ethyl ether, a kind of solvated Lewis acid. The electric conductivity of the polythiophene film is a bout 100 Scm-1. and the tensile strength is as high as 140 MPa, which is forty percent higher than that of aluminum.

事實(shí)上综合性爱网，我們已經(jīng)從一種Lewis酸催化下的低電位聚合體系—噻吩/三氟化硼乙醚溶液中得到了高質(zhì)量的聚噻吩薄膜，在降低了的聚合電位下得到的聚合物具有優(yōu)異的力學(xué)及電學(xué)性能：拉伸強(qiáng)度達(dá)140MPa(比金屬鋁高40%)av全国最大的黄色网站，電導(dǎo)率則可達(dá)100Scm-1日本高清网址在线视频免费。

In fact, we had obtained polythiophene films with high quality in BF〓-ethyl ether, a kind of solvated Lewis acid. The electric conductivity of the polythiophene film is about 100Scm〓, and the tensile strength is as high as 140Mpa, which is forty percent higher than that of aluminum.

事實(shí)上www.韩日欧黄色片网站.com，我們已經(jīng)從一種Lewis酸催化下的低電位聚合體系-噻吩/三氟化硼乙醚溶液中得到了高質(zhì)量的聚噻吩薄膜，在降低了的聚合電位下得到的聚合物具有優(yōu)異的力學(xué)及電學(xué)性能：拉伸強(qiáng)度達(dá)140MPa（比金屬鋁高40％）wwwww在线国产，電導(dǎo)率則可達(dá)100Scm〓国产精品熟女30p。

Aromatic solvent naphtha was obtained by two-stage synthesis from C9 fractions from ethylene cracking with boiling range of 100~200℃ in the presence of Lewis acid as catalyst.

以沸程在100~200℃乙烯副產(chǎn)C9餾分為原料，進(jìn)行了以Lewis酸為催化劑的兩段聚合法制備芳烴溶劑油工藝的研究免费看成年人网站。

The incorporation of titanium into the silica framework provoked mainly a proportional increase of Lewis acid sites.

把鈦加入二氧化硅的網(wǎng)絡(luò)結(jié)構(gòu)中主要產(chǎn)生了成比例的Lewis酸位點(diǎn)的增長进入黄网站有点击进入影院。

Electrochemistry measurements showed that the interaction increased with raised acidity of the Lewis acid.

電化學(xué)實(shí)驗(yàn)還證明Lewis酸和噻吩環(huán)之間的作用隨酸性的增強(qiáng)而增強(qiáng)。

From a viewpoint of synthetic organic chemistry,the recent development and application of magnesium perchlorate as a Lewis acid catalyst in organic reactions are reviewed.

從有機(jī)合成化學(xué)的角度久久青草国产免费频观日本，按反應(yīng)類型綜述了高氯酸鎂作為Lewis酸催化劑在有機(jī)化學(xué)中的應(yīng)用日本小视频免费。

With the promotion of Lewis acid,these aziridines were readily hydrolyzed to generateα-chloro-phenyl-acetamide.

在Lewis酸的存在下，產(chǎn)物很容易進(jìn)行水解反應(yīng)视频黄片在线，生成氯代的苯乙酰胺欧亚洲黄色。

These catalytic reactions follow the bifunctional mechanism of Lewis acid activation and metal hydroxide activation.

催化反應(yīng)遵循Lewis酸活化和金屬羥基活化的雙功能機(jī)理。