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国产激情毛片、oxalic acid国产毛片盗摄视频、glycolic acid、monomethyl monopotassium malonate亚洲一级A片A毛、ethyl cyanoacetate欧美超碰视屏、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(shè)計(jì)以鄰苯二胺和草酸色播播电影、羥基乙酸国产精品免费久久久久影院无码、丙二酸單甲酯、氰基乙酸乙酯草碰在线播、丁二酸單甲酯為原料采用PPA催化和無機(jī)酸催化法久久精品久久囯产精品，合成了4種苯并咪唑-2-羧酸衍生物并進(jìn)行了表征欧美黑逼；培養(yǎng)了2個(gè)化合物d、e的晶體并測(cè)定和討論了晶體結(jié)構(gòu)日韩成人久久久影视网站大全；制備了3種未見報(bào)道的苯并咪唑金屬配合物人妻影音先锋啪啪av资源网下载，對(duì)配合物在羰基化法制醋酐-醋酸反應(yīng)的催化作用進(jìn)行了初步試驗(yàn)。

In this research, we used Trifluoroacetic anhydride as a derivatizing agent to esterify the trace glycerol in biodiesel, followed by the determination of trace glycerol using microwave assisted headspace SPME extraction technique combined with GC-ECD.

本研究利用三氟醋酸酐與生質(zhì)柴油中的微量甘油進(jìn)行酯化反應(yīng)欧美老女人性生活视频，反應(yīng)后的衍生物以本實(shí)驗(yàn)室開發(fā)的微波輔助頂空固相微萃取裝置采樣人人干人人射欧美，并以氣相層析儀搭配電子捕捉偵測(cè)器作分析。

The result makes clear, different dilute is the gemmiparous rate of fluid of vinegar of pH indicator wood and corn seed, gemmiparous index, gemmiparous situation existence is remarkable 3 curves correlativity, as long as emerge seedling presence is more remarkable 3 times the curve concerns, to sprouting time is reached orderly degree of influence with also have certain.

結(jié)果表明欧美精品a片在线看，不同稀釋濃度的木醋液和玉米種子的發(fā)芽率午夜视频又黄又爽、發(fā)芽指數(shù)、發(fā)芽勢(shì)存在顯著三次曲線相關(guān)關(guān)系亚洲三级片免费网站，和出苗苗長(zhǎng)存在較顯著三次曲線關(guān)系成人漫画在线，對(duì)出芽時(shí)間及整潔度也有一定的影響。

The synthetic route of glycidyl nitrate was improved. Glycidol was synthesized by the cyclization process from allyl alcohol and m-CPBA, then glycidyl nitrate was synthesized with glycidol as raw materials and HNO3/ 2O as nitrating agent.

為了改進(jìn)縮水甘油醚硝酸酯的合成路線禁止18岁观看，以丙烯醇為原料女的被男的C出水来免费视频，經(jīng)間氯過苯甲酸環(huán)氧化后得到縮水甘油醇，然后GA經(jīng)硝酸／醋酐硝化后得到了GN毛片免费全部播放无码直播，硝化產(chǎn)物GN的收率為70.2%免费一级A片刺激视频在线观看，經(jīng)過減壓精餾后GN的純度達(dá)到了98.9%。

A drug,C14H19NO2,chemically related to amphetamine,that acts as a mild stimulant of the central nervous system and is used especially in the form of its hydrochloride for the treatment of narcolepsy in adults and hyperkinetic disorders in children.

哌醋甲酯一種藥欧美理论大片清免费观看，C14H19NO2亚洲A片不卡网站，與苯丙胺有化學(xué)上的聯(lián)系，用作中樞神經(jīng)系統(tǒng)弱興奮劑国产精品ⅴa无码一区二区，尤其以其氫氯化物形式來治療成人的發(fā)作性睡眠病和兒童的運(yùn)動(dòng)功能亢進(jìn)失調(diào)

It showed that, compared with other catalysts, SO(superscript 2- subscript 4)/TiO2-ZrO2 was more active to bring about more than 95% conversion rate of stillingia oil under the transesterification conditions of 150℃, molar ratio of methanol to oil 12:1, catalyst amount 5% and reaction time 6h.

結(jié)果表明酒色色色网站，催化劑SO(上標(biāo) 2-下標(biāo) 4)/TiO2-ZrO2表現(xiàn)出了較高的催化活性，SO(上標(biāo) 2-下標(biāo) 4)/TiO2-ZrO2催化的最佳酯交換反應(yīng)條件為：反應(yīng)溫度150℃视频一区无码在线，醇油摩爾比12：1日韩人妻中文在线综合，催化劑用量5%，反應(yīng)時(shí)間6h精品入口，此時(shí)烏桕籽油的醋化率超過95%干干操操免费视频，且催化劑重復(fù)和再生使用效果良好。

This article from is various,multi-level,after discussed front the fluid the solid zymotechnics to ferment the main reason which the vinegar summer reduced production,has formulated the corresponding preventing and controlling measure,and has obtained the ideal effect.

從多方面黄色网站在线的视频、多層次国产免费福利网站，探討了前液后固發(fā)酵法釀醋夏季減產(chǎn)的主要原因，制定了相應(yīng)的防治措施18岁以下禁止进的网站，并取得了理想的效果天天传媒91精品AⅤ。

At the same time, but in order to field a hare Wei and small rabbit shopping to buy a dry shirt and suck up the vinegar, just as much over the rabbit, all of a sudden news broadcast around the world on more than 80 children The early morning of strange disappearances reported.

與此同時(shí)月野兔卻為了地場(chǎng)衛(wèi)和小小兔購物時(shí)買的一件襯衫而大吃干醋，正當(dāng)小兔鬧得不可開交的時(shí)候真人免费三级视频，新聞中突然播出了有關(guān)全世界80多個(gè)孩子凌晨離奇失蹤事件的報(bào)道自拍偷区亚洲综合精品。

The effect of the special monomers on the properties of the emulsion was studied. The results showed that when the amount of GMA was 4.4% and the amount of actyflon was 1.0% of the monomers, salt spray resistance of the emulsion, could be up to 240 h without rust spots and babbles.

結(jié)果表明一级性生活强奸免费不卡视频，當(dāng)環(huán)氧單體甲基丙烯酸縮水甘油醋用量為總單體用量的4.4%，含氟單體用量為總單體用量的1.0%時(shí)经典1页日韩中文字幕视频在线，能夠顯著提高乳液的交聯(lián)度和疏水性美女裸体被操网站免费，乳液成膜后進(jìn)行中性鹽霧實(shí)驗(yàn)，中性鹽霧時(shí)間可達(dá)到240h无码操B在线播放，板面無銹點(diǎn)伊人网在线免费，主體無起泡。

Until that day, you can often get the wrinkles out of clothes after drying by misting them with a solution of 1 part vinegar to 3 parts water.

有一天jizz18丝袜，當(dāng)你用比例為1：3的醋水溶液對(duì)洗好的衣物進(jìn)行噴灑久久精品精品久久，你就會(huì)發(fā)現(xiàn)自己也可以輕易地將衣物上的褶皺除掉。