In the 1960s, a Houston company known as " Petro-Tex " patented a process to produce butadiene from normal butenes by oxidative dehydrogenation using a proprietary catalyst.
32.
Butane and 1-butene are common impurities, present at 1 % or more in industrial mixtures, which also contain smaller amounts of isobutene, butadiene and butyne.
33.
1, 2-Dimethylcyclopropane is 1 of 10 structural isomers ( cycloalkanes and aliphatic alkenes ) which share the general formula of 2-methyl-2-butene.
34.
Officials at Pemex said the company was studying ways to reduce harmful butane and butene in liquid gas, to limit leaks when tanks are filled, and to strengthen the tanks.
35.
Thus reaction of 1-chloro-2-butene with sodium hydroxide gives a mixture of 2-buten-1-ol and 3-buten-2-ol:
36.
An important physical property is that higher molecular weight grades thermally degrade to lower-molecular weight polybutenes; those evaporate as well as degrade to butene monomers which can also evaporate.
37.
The plant will initially produce butene linear low-density polyethylene resins, with Dow Chemical's trademark DOWLEX polyethylene coming into production toward the end of the year, the statement said.
38.
In 3-methyl-1-butene, the interactions between the hydrogen and the two methyl groups in the allylic system cause a change in enthalpy equal to 2 kcal / mol.
39.
Thanks to two of its components, butane and butene, both harmful to the environment, the use of propane has helped make Mexico City one of the world's most polluted cities.
40.
Its main uses are in the production of gasoline ( petrol ) and butadiene, although some 2-butene is also used to produce the solvent butanone via 2-butanol followed by oxidation.
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