Study on the Selective Hydrogenation of Butadiene in C&lt;sub&gt;4&lt;/sub&gt;-Hydrocarbon Fraction (Part 3)

Furukawa, Yoshiyuki; Yokomizo, Takashi; Fujii, Kinya; Komatsu, Y.

doi:10.1627/jpi1959.15.71

Cited by 3 publications

(2 citation statements)

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“…As long as sufficient butadiene is available on the catalyst surface, butene adsorption is unfavorable and no or little butane forms. Addition of a small amount of CO, i.e., in the ppm range, to a typical C 4 feed corroborates this assumption 7–9: If butadiene conversion is high, CO instead of butene occupies free adsorption sites and butane formation is prevented. Nevertheless, CO has to be fed continuously and at high conversion butane formation takes place.…”

Section: Introductionmentioning

confidence: 61%

Selectivity‐Enhancing Effect of a SCILL Catalyst in Butadiene Hydrogenation

2016

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Directing the selectivity towards one particular product in a series of consecutive reactions is challenging. Solid catalysts with an ionic liquid layer (SCILL) can be a tool to get a high selectivity of a desired intermediate. For the hydrogenation of butadiene, SCILL catalysts with palladium as active metal yield butene selectivities of up to 99 % even for full conversion of butadiene. Experimental results are presented which corroborate that the SCILL effect is mainly explained by competitive adsorption.

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Section: Introductionmentioning

confidence: 61%

Selectivity‐Enhancing Effect of a SCILL Catalyst in Butadiene Hydrogenation

2016

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“…Since 2-butene [107-01-7] is more stable thermodynamically than 1-butene [106-98-9] under mild conditions, catalysts that promote 1,2-addition and do not isomerize 1-butene are essential for getting high 1-butene selectivity. Many of the palladium catalysts require the use of CO to improve 1-butene selectivity (72)(73)(74). Selectivities to various isomers are more difficult to predict when metal oxides are used as catalysts.…”

Section: Hydrogenationmentioning

confidence: 99%

Butadiene

Sun

Wristers

2002

Kirk-Othmer Encyclopedia of Chemical Technology

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Butadiene, C 4 H 6 , exists in two isomeric forms: 1,3‐butadiene and 1,2‐butadiene. 1,3‐Butadiene is a commodity product of the petrochemical industry. Elastomers consume the bulk of 1,3‐butadiene, led by the manufacture of styrene–butadiene rubber (SBR). 1,3‐Butadiene is manufactured primarily as a coproduct of steam cracking to produce ethylene in the United States, Western Europe, and Japan. However, in certain parts of the world it is still produced from ethanol. The other isomer, 1,2‐butadiene, has no significant current commercial interests. 1,3‐Butadiene is a noncorrosive, colorless, flammable gas at room temperature and atmospheric pressure. It has a mildly aromatic odor. It is sparingly soluble in water, slightly soluble in methanol and ethanol, and soluble in organic solvents like diethyl ether, benzene, and carbon tetrachloride. The conjugated double bonds of 1,3‐butadiene allow a large number of reactions at both the 1,2‐ and 1,4‐positions. These reactions include addition, hydrogenation, oxidation, Diels–Alder, oligomerization, and polymerization reactions. Many of these reactions produce large volumes of important industrial materials. Butadiene reacts with a large number of chemicals, has an inherent tendency to dimerize and polymerize, and is toxic. Therefore, specific handling, storage, and shipping procedures must be followed. U.S. shipments of butadiene, which is classified as a flammable compressed gas, are regulated by the Department of Transportation. Short‐term exposure to high concentrations of butadiene may cause irritation to the eyes, nose, and throat. Dermatitis and frostbite may result from exposure to the liquid and the evaporating gas. In several epidemiological studies, elevation in mortality was observed for small subgroups and tumor types. Updated exposure limits are given. Butadiene is used primarly in polymers. Other uses are given.

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Butadiene

Sun

Wristers

2000

Kirk-Othmer Encyclopedia of Chemical Technology

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Butadiene, C 4 H 6 , exists in two isomeric forms: 1,3‐butadiene \documentclass{article}\usepackage{amssymb}\pagestyle{empty}\begin{document}${{\rm{CH}}{_{2}}{\raise1pt\hbox{$\Relbar \kern-4pt{\Relbar}$}} {\rm{CH}}{\relbar \kern-5pt{\relbar}\kern-7pt{\relbar}}{\rm{CH}}{\raise1pt\hbox{$\Relbar \kern-4pt{\Relbar}$}} {\rm{CH}}{_{2}}}$\end{document} , and 1,2‐butadiene, \documentclass{article}\usepackage{amssymb}\pagestyle{empty}\begin{document}${{\rm{CH}}{_{2}}{\raise1pt\hbox{$\Relbar \kern-4pt{\Relbar}$}} {\rm{C}}{\raise1pt\hbox{$\Relbar \kern-4pt{\Relbar}$}}{\rm{CH}}{\relbar \kern-5pt{\relbar}\kern-7pt{\relbar}}{\rm{C}}{_{3}}}$\end{document} . 1,3‐Butadiene is a commodity product of the petrochemical industry. Elastomers consume the bulk of 1,3‐butadiene, led by the manufacture of styrene–butadiene rubber (SBR). 1,3‐Butadiene is manufactured primarily as a coproduct of steam cracking to produce ethylene in the United States, Western Europe, and Japan. However, in certain parts of the world, eg, China, India, Poland, and the former Soviet Union, it is still produced from ethanol. The other isomer, 1,2‐butadiene, has no significant current commercial interests. 1,3‐Butadiene is a noncorrosive, colorless, flammable gas at room temperature and atmospheric pressure. It has a mildly aromatic odor. It is sparingly soluble in water, slightly soluble in methanol and ethanol, and soluble in organic solvents like diethyl ether, benzene, and carbon tetrachloride. The conjugated double bonds of 1,3‐butadiene allow a large number of reactions at both the 1,2‐ and 1,4‐positions. These reactions include addition, hydrogenation, oxidation, Diels‐Alder, oligomerization, and polymerization reactions. Many of these reactions produce large volumes of important industrial materials. Butadiene reacts with a large number of chemicals, has an inherent tendency to dimerize and polymerize, and is toxic. Therefore, specific handling, storage, and shipping procedures must be followed. U.S. shipments of butadiene, which is classified as a flammable compressed gas, are regulated by the Department of Transportation. Short‐term exposure to high concentrations of butadiene may cause irritation to the eyes, nose, and throat. Dermatitis and frostbite may result from exposure to the liquid and the evaporating gas. In several epidemiological studies, elevation in mortality was observed for small subgroups and tumor types. Interpretation of these findings is still incomplete.

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Study on the Selective Hydrogenation of Butadiene in C<sub>4</sub>-Hydrocarbon Fraction (Part 3)

Cited by 3 publications

References 2 publications

Selectivity‐Enhancing Effect of a SCILL Catalyst in Butadiene Hydrogenation

Selectivity‐Enhancing Effect of a SCILL Catalyst in Butadiene Hydrogenation

Butadiene

Butadiene

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