Isobutane R600a is a colorless, flammable gas that is slightly soluble in water and stable in nature. It can form an explosive mixture with air with an explosion limit of 1.9 to 8.4% (volume). It exists in petroleum and natural gas. It is industrially produced by petroleum cracking or by isomerization of n-butane. Isobutane is mainly used to prepare isooctane as an improver for gasoline octane number. It is also used as a refrigerant.
Isobutane R600a Chemical Applications
Isobutane R600a is mainly used in the chemical industry in four ways:
(1) Alkylation to produce alkylated gasoline; dehydrogenation to produce isobutylene;
(2) Steam cracking to produce ethylene, propylene, etc.;
(3) Co-oxidation of isobutane and propylene to produce propylene oxide and co-produce tert-butyl alcohol;
(4) Isobutane and formaldehyde to produce butadiene (this technology has been industrialized in Russia). In addition to being directly used for civilian fuels, most of the domestic isobutane is alkylated to produce automotive fuel blending components, and other chemical utilization methods are rarely used. The co-oxidation of isobutane and propylene to produce propylene oxide and tert-butyl alcohol has the advantage of no environmental pollution, but the investment is relatively high. The domestic production of propylene oxide generally adopts the chlorohydrin method, which has extremely serious environmental pollution, but its advantage is relatively low investment.
Introduction to Isobutane R600a
Isobutane R600a is a hydrocarbon refrigerant, a colorless flammable gas. Specific gravity 0.5510 (25℃), melting point -145℃, boiling point -11.73℃. It exists in liquefied petroleum gas, natural gas and cracking gas. Isobutane can also be produced by isomerization of n-butane. It is slightly soluble in water, has stable chemical properties, and forms an explosive mixture with air, with an explosion limit of 1.9% to 8.4% (volume).
Use of Isobutane R600a
Isobutane R600a is mainly used to react with isobutylene to produce isooctane through alkylation reaction. It is used as a gasoline octane improver and can also be used as a refrigerant.