在石油化学工业中所用的许多原料是不饱和烃类，如乙烯、丙烯、丁烯和丁二烯。
Many of the raw materials used in the petrochemical industry are unsaturated hydrocarbons, such as ethylene, propylene, butene and butadiene.
氢转移反应越低，丙烯及丁烯等烯烃选择性越高。
Propylene and butylene yields increase with low hydrogen transfer reaction.
探索了丁烯催化转化为丙烯、乙烯的反应特点。
The reaction features of the catalytic conversion of butylenes to propylene and ethylene were investigated.
它们是乙烯，丙烯，异丁烷，环丁烷，丁烯类化合物三个，甲基乙基醚，乙基异丙基醚，乙酸乙酯。
Ten of them were identified. They are ethylene, propylene, isobutane, cyclobutane, three isomeric butenes, methyl ethyl ether, ethyl isopropyl ether, and ethyl acetate.
采用球形Z-N催化剂，使用乙烯、丙烯和1-丁烯作为共聚单体，分步聚合催化合成了三元多相共聚聚丙烯。
The preparation of polypropylene alloy by 2-stage heterophase catalytic copolymerization of ethylene, propylene and 1-butene on spheric Ziegler-Natta catalyst had been studied.
混合c 4中含有质量分数约为40%的正丁烯，是生产丙烯的优质原料。
The mass fraction of n-butene in mixed C4 from catalytic cracking after etherized was approximately 40%.
本发明涉及一种用于通过异丁烯醛的气相氧化制备甲基丙烯酸的杂多酸催化剂及其制备方法。
The present invention relates to a heteropoly acid catalyst which is used for the production of methacrylic acid by gas phase oxidation of methacrolein and a preparing method thereof.
因此，本发明提供了一种具有优异的异 丁烯醛转化率、甲基丙烯酸选择性和产率的新型杂多酸催化剂。
The present invention, thereby, provides a novel heteropoly acid catalyst having excellent methacrolein conversion rate, methacrylic acid selectivity and yield.
因此，本发明提供了一种具有优异的异 丁烯醛转化率、甲基丙烯酸选择性和产率的新型杂多酸催化剂。
The present invention, thereby, provides a novel heteropoly acid catalyst having excellent methacrolein conversion rate, methacrylic acid selectivity and yield.
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