烯

In this paper, oligomerization catalyst was prepared by impregnation and the performance of Fe-Ni catalyst was studied for mixed butene oligomerization.The effect of preparation conditions, reaction conditions and molding methods of powder catalyst was separately studied on the performance of mixed-butene oligomerization.

本文采用浸渍法制备了齐聚催化剂，考察了负载型Fe-Ni催化剂在催化混合丁烯齐聚反应中的性能，研究了催化剂的制备条件、反应条件和成型等对混合丁烯齐聚性能的影响。

Using density functional theory, the rearrangement of butene double bond catalyzed by a 3T cluster model of zeolite was investigated.

基于含有两个Si和一个Al的分子筛3T簇模型，利用密度泛函方法研究了分子筛催化1-丁烯双键异构为cis-2-丁烯的反应机理。

The MTO process of alkene preparation,including ethylene,propylene,butene,by the synthesis of methanol from natural gas was discussed.

介绍了国内外天然气制烯烃技术发展概况，论述了以天然气为原料经合成甲醇进一步生产烯烃的 MTO工艺。

When used as vehicle fuel, it is commonly known as liquefied petroleum gas (LPG or LP-gas), which can be a mixture of propane along with small amounts of propylene , butane , and butylene .

当用作汽车燃料，它通常被称为液化石油气，这可能是一个混合丙烷连同少量的丙烯，丁烷和丁烯。

Described are the application of butylene type coatings, comprising polyisobutylene polymers, to maintain desirable existing characteristics of a shoe, such as feel and feedback, but which improve grip.

描述了涂覆包括聚异丁烯聚合物的丁烯类涂层，以保持鞋的所需现有性能，例如感受和反馈，但还提高抓着性能。

"Rare in nature, olefins are obtained by the cracking of petroleum fractions at high temperatures. The simplest ones (ethylene, propylene, butylene, butadiene, and isoprene) are the basis of the petrochemical s industry."

烯烃在自然界很稀少，但在石油裂解成汽油过程中可大量生成，低级的单烯烃已成为庞大的石油化学工业的基础。

The effects of degree of carbon deposition and regeneration,catalyst impurities,iso butylene impurity in feed stock as well as operational parameters on carbon deposition of W 201 catalyst for oxydehydrogenation of butene to butadiene have been studied.

从工业应用出发，研究了丁烯氧化脱氢制丁二烯W－201催化剂的结炭数量及再生、催化剂杂质元素分析、原料中异丁烯杂质及操作参数对催化剂结炭的影响等。

"Rare in nature, olefins are obtained by the cracking of petroleum fraction s at high temperatures. The simplest ones (ethylene, propylene, butylene, butadiene, and isoprene) are the basis of the petrochemicals industry."

烯烃在自然界很稀少，但在石油裂解成汽油过程中可大量生成，低级的单烯烃已成为庞大的石油化学工业的基础。

"Rare in nature, olefins are obtained by the cracking of petroleum fractions at high temperatures. The simplest ones (ethylene, propylene, butylene, butadiene, and isoprene) are the basis of the petrochemicals industry."

烯烃在自然界很稀少，但在石油裂解成汽油过程中可大量生成，低级的单烯烃已成为庞大的石油化学工业的基础。

Mainly engaged in: Hydrogen-imide hydrochloride, o-chlorophenyl cyclopentanone, 3.4 dimethoxy ethyl benzene, butyn single potassium acid, potassium ethyl malonyl, Ding amide, amide isobutyraldehyde , allyl chloroacetate, isopropyl chloroacetate Benzyl aluminum, cyclopentene, cyanide-o-chlorophenyl, o-methyl chloride, sulfuric acid chloride, p-chlorophenol, imidazole, Pinacolone, one chlorine Pinacolone.

主要经营：盐酸氢亚胺、邻氯苯基环戊酮、3.4二甲氧基苯乙酯、丁炔二酸单钾盐、丙二酸单乙酯钾盐、丁酰胺、异丁酰胺、氯乙酸烯丙酯、氯乙酸苄酯异丙醇铝、环戊烯、邻氯苯氰、邻氯苯甲酯氯、硫酸氯、对氯苯酚、咪唑、频呐酮、一氯频呐酮。

The labia have now been sutured together almost completely.The drains and the Foley catheter come out at the top.

此刻阴唇已经几乎完全的缝在一起了，排除多余淤血体液的管子和Foley导管从顶端冒出来。

To get the business done, I suggest we split the difference in price.

为了做成这笔生意，我建议我们在价格上大家各让一半。