Solventfree dielsalder reactions of in situ generated. The setup as instructed by my supervisor consisted of a simple watercooled liebig condenser. The experiments were carried out in decaline solution with 24 43 wt % initial dicyclopentadiene content, in 1 dm3 distillation flask equipped with glass condenser duplicator. Steam cracking of hydrocarbons is one of the most important processes of the. Dicyclopentadiene is an important commercial chemical that is used to make other chemicals, in paints, varnishes, resins and in materials used to line water ponds. This new compound must be separated before the desired compound can be used. I recently did a distillation of dicyclopentadiene bp 166 c to get cyclopentadiene bp 40 c. Dicyclopentadiene is coproduced in large quantities in the steam cracking of. Dicyclopentadiene, stabilized with bht precursor to. The reaction kinetics of cyclopentadiene dimerization. At room temperature, it is a clear light yellow color liquid with an acrid odor. View lab report lab report 1 from che 211l at quinnipiac university. In the autoclave reactor, reaction temperature, reaction time, diluent, and.
Search results for dicyclopentadiene at sigmaaldrich. A reactive distillation process was developed for cracking dicyclopentadiene dcpd to produce cyclopentadiene cpd. Preparation of cyclopentadiene from its dimer journal of. Dicyclopentadiene, abbreviated dcpd, is a chemical compound with formula c10h12. Dielsalder reaction of cyclopentadiene with maleic anhydride. The reverse reaction of monomeration 1 was suppressed by continuous distillate removal of forming monomer from reaction mixture.
Cyclopentadienedicyclopentadiene chemical economics. Curing reaction of unsaturated polyester resin modified by. The rate of monomer formation cracking becomes reasonable at temperatures above 150 c and approaching the boiling point of the dimer. In petrochemistry, petroleum geology and organic chemistry, cracking is the process whereby complex organic molecules such as kerogens or longchain hydrocarbons are broken down into simpler molecules such as light hydrocarbons, by the breaking of carbon carbon bonds in the precursors. Cyclopentadiene and its dimer, dicyclopentadiene dcpd, are obtained as by products of the steam cracking of hydrocarbons. Liquidphase cracking of dicyclopentadiene by reactive. If you were to attempt to distill the monomer from the dimer at say 60 c it would probably take a very long time due to the slow rate of monomer formation at that temperature. Cyclopentadiene has a rather strong and disagreeable odor and. When pure cyclopentadiene is stored it also undergoes a dielsalder cycloaddition reaction and forms dicyclopentadiene.
Healable polymer after cracking and thermal mending. Find dicyclopentadiene, stabilized with bht precursor to cyclopentadiene at now. The reaction of cyclopentadiene with acroleine is an exemplary of such. Gas phase cracking of dicyclopentadiene to produce. What kind of reaction does the cracking of dicyclopentadiene represent. Above 150 c, dicyclopentadiene undergoes a retrodielsalder reaction at.
The process of producing highpurity cyclopentadiene cpd has been. Kommerziell erhaltliches dicyclopentadien iupacname. Cyclopentadiene is a useful diene in dielsalder reactions as well. Liquidphase cracking of dicyclopentadiene by reactive distillation. Dielsalder reaction, cyclopentadiene, maleimide, reversible. Abstract cyclopentadiene, and more importantly its functionalized. Dicyclopentadiene is coproduced in large quantities in the steam cracking of naphtha and gas oils to ethylene. Usually it is obtained by cracking of dicyclopentadiene and is used immediately in a reaction.
The major use is in resins, particularly, unsaturated polyester resins. Cyclopentadiene cpd and dicyclopentadiene dcpd are two important products obtained from oil cracking, which are interconvertable through a dielsalder reaction. Airsensitive solids were handled inside an innovative technology nitrogen glove box. Single event microkinetic model for steam cracking of ghent. Dielsalder reaction of cyclopentadiene and alkyl acrylates in the. The reaction product has been claimed to be solely endodcpd. Synthetic routes towards multifunctional cyclopentadienes frei. It is also used near trees and landscaping to prevent animals from eating the plants. Cyclopentadiene, formed in situ, reacted with the dienophile in a. Cyclopentadiene was obtained as a results of thermal cracking of. Cyclopentadiene and its dimer, dicyclopentadiene dcpd, are obtained as byproducts of the steam cracking of hydrocarbons.
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