It was found that the thermodynamically unfavourable isomerization of quadracyclane to norbornadiene could be accomplished in the presence of toluene or durene as a co-sensitizer.

首次發(fā)現(xiàn)在甲苯黄人人操干、杜苯等芳烴共敏化下天美自拍乱码在线播放视频，可以使原來不能進行的、熱力學不利的四環(huán)烷→降冰片二烯異構化得以進行欧美狂野激情XXXX，并根據(jù)CIDNP結果提出這是由于生成了敏化劑/底物/芳烴三元基激絡合物使反應的勢能面改變造成的并促進單線態(tài)的系間竄躍黄色的免费。

Pseudocumene, mesitylene, 1,2,3-trimethylbenzene and durene among theheavy aromatic hydrocarbon from catalytic reformation in oil refinery areimportant fine chemical materials, they have not only high additional value butalso particularly useful property, therefore, the exploiting and utilizing the sourceof the heavy aromatic hydrocarbon are of large commercial benefit and promisingapplication future.

煉油廠催化重整裝置重芳烴中偏三甲苯、均三甲苯久久久久久精品本婷婷、連三甲苯欧美日韩在线视、均四甲苯等都是精細化工的重要原料，不僅附加價值高欧美一级,日韩三级，而且具有獨特的優(yōu)良性能欧美老年性生活视频。因此開發(fā)利用重芳烴資源具有較大的經(jīng)濟價值和廣泛的應用前景。

Durene ; pitch modification ; fraction property relationships ; coke yield ; viscosity

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Solid superacids SO~2-_4/TiO_2-Al_2O_3 were prepared and used to catalyze the esterfication of iso-octyl alcohol and by-products in oxidization reaction of durene,which were pretreated before esterifying reaction.

考察了催化劑用量、異辛醇與混合酸的質量比av超碰av超碰人人爱、反應時間等因素對酯化反應的影響亚洲人成网网址在线看，確定了較佳的反應工藝條件：m∶m∶m=0.01∶3.18∶1，反應時間為3 hbbixxcon在线观看，在此反應條件下預處理后的混合酸轉化率可達到99.9%无码国内精品麻豆久久人妻。

Ruixing is the registered trademark of our company, and the major products include Pyromellitic Dianhydride, Pyromellitic Acid, mesitylene, Durene, Aluminum Chloride Anhydrous, fluoro paints, melamine, green chrome oxide and metal chromium.

公司產(chǎn)品注冊商標為&瑞星&牌，主導產(chǎn)品為：均苯四甲酸二酐、均苯四甲酸日本黄色视频网址、均三甲苯欧美草草操在线视频、均四甲苯、無水三氯化鋁色久是色、氟碳涂料www又湿又大、三聚氰胺、氧化鉻綠和金屬鉻一本二本三本黄色视频。

Our company is mainly engaged in chemical raw materials trading, the company mainly engaged in: toluene, xylene, mesitylene, durene, 6 # 120 # 200 # solvent, ethyl acetate, butyl acetate, acetone, butanone, cyclohexanone, isophorone, MIBK, isopropyl alcohol, isobutyl alcohol, butanol, mixed alcohols, methanol, ethanol, ethylene glycol, diethylene glycol, diacetone alcohol, Anti-White Water, CAC, n-hexane, dichloromethane, trichloro-B, DMF, 5 # 10 # 15 # white mineral oil, lubricating oil, sewing machine oil, as well as high-pressure polyethylene, linear polyethylene, low-pressure polyethylene, polypropylene, rubber and other chemical raw materials.

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A Product main business categories: chemical solvents white oil, toluene, xylene, durene, valitin water, acetate, D resin, acetone, butanone, cyclohexanone , anti-white water, dichloromethane, trichloroethane, trichlorethylene, loose water-saving washing network water, open water, wash water, and days that water, rust agent, to water-logging, washing machine water, decontamination water, n-butyl alcohol, isopropyl alcohol, ethanol, industrial alcohol, car-washing water, washing machine water, clean lines of water, cleaning machine water, fire water, paint remover, fungicides, antifreeze water, chloroform, grinding fluid , diluent, release agent, dehydration agent substantial industrial solvents.

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