a flammable gas obtained by cracking petroleum; used in organic synthesis
双语例句
1. The epoxidation of propene in gas phase has been investigated.
研究了纯丙烯气相氧化的环氧化反应。
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2. Admixture of a SiO2 carrier, however, decreases the propene selectivity somewhat.
然而，二氧化硅载体的掺加稍微降低了丙烯的选择性。
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3. Its catalytic properties for alkylation of benzene with propene were investigated.
研究了其对丙烯和苯的烷基化反应的催化性质。
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4. Relations between benzene to propene ratio(R) and reactive results in alkylation were studied.
对烃化过程中苯丙烯比（R）与反应结果的关系进行了研究。
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5. Rising temperature can greatly increase the conversion of propane and then the yield of propene.
升高温度虽然能极大的提高丙烷的转化率从而增加丙烯的收率。
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6. The paper describes the analytical methods of trace level hydrocarbon impurities in pure ethene and propene.
本文介绍了聚合级乙烯和丙烯中烃杂质的分析方法。
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7. They mainly includes the utilization of ethene in dry gas and of propene and butylene in liquified petroleum gas.
重点包括干气中乙烯的利用、液化气中丙烯和碳四的利用。
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8. Properly selected reaction temperature can suppress the secondary reactions and enhance the production of propene and ethene.
选择适宜的反应温度条件能够有效地抑制副反应，从而提高丙烯、乙烯的总产率。
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9. With the increase of R, the propene conversion of the single stage and the selectivity of cumene increase and the side reaction decreases.
随着苯丙烯比的升高，丙烯单程转化率上升，异丙苯选择性上升，副反应降低。
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10. New allyl lithium THF complex was prepared conveniently by the reaction of propene with n-butyl lithium in the presence of tetrahydrofuran.
在四氢呋喃存在下，将丙烯和丁基锂直接反应合成了未见文献报道的烯丙基锂四氢呋喃配合物。
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11. The oxidative dehydrogenation of propane (ODP) to propene is one important subject in natural gas, oil field gas and refinery gas application area.
丙烷氧化脱氢制丙烯是利用天然气、油田气和炼厂气的一个重要课题。
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12. The liquid product from the ammoxidation of propene to acrylonitrile was analyzed by means of coupling the Type 103 gas chromatograph with a computer.
本文利用103型气相层析仪与电子计算机联接，分析了丙烯氨氧化合成丙烯腈的液体产物。
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13. The thermal desorption spectra of propene and oxygen adsorbed on blue tungsten oxide WO_ (2.90) have been measured by means of flash heating the sample in ultra high vacuum.
14. Effects of impurities in raw material on the activity and stability of molecular sieve catalyst in alkylation of benzene with propene, and removal of impurities were studied.
分析了原料中杂质对催化剂活性和稳定性的影响及脱除杂质的方法。
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15. The paper proposed chitosan is chosen as the new carrying agent, and the experiment shows chitosan can be investigated as the new carrying agent for propene separation further.
16. It's very difficult to investigate the content variation of sulfide in fine propene since the state of organic sulfide in gas fractionation unit feedstock (LPG) was very complex.
17. It was shown that there was by product acetone in the products of propene hydration etherification, while there existed no acetone in the products of isopropanol dehydration reaction.
丙烯水合醚化反应中有副产物丙酮生成，而异丙醇单独进料时产物中没有发现丙酮的生成。
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18. Carbon materials have high catalytic activity and selectivity to propene for ODP. Compared with activated carbon and graphite, CNF is a promising catalyst for ODP due to its structure peculiarities.
19. Carbon materials have high catalytic activity and selectivity to propene for ODP. Compared with activated carbon and graphite, CNF is a promising catalyst for ODP due to its structure peculiarities.
