摘要:
Processes and systems for making cyclopentadiene and/or dicyclopentadiene include converting acyclic C5 hydrocarbon(s) into CPD in a first reactor in the presence of a C1-C4 co-feedstock to obtain a product mixture, separating the product mixture in a separation sub-system such as compression train to obtain a C5-rich fraction comprising CPD and essentially depleted of hydrogen and C1-C4 hydrocarbons, dimerizing the C5-rich fraction in a dimerization reactor to obtain a product effluent comprising DCPD, followed by separating the product effluent to obtain a DCPD-rich fraction. Multiple-stage of dimerization and separation steps can be optionally used to obtain multiple DCPD-rich fractions of various degrees of purity and quantity. C5-rich fractions from various stages of the process may be recycled to the first reactor, or converted into mogas components after selective hydrogenation. C5-rich fractions and mogas components may be optionally separated to produce value-adding chemicals.
摘要:
The invention relates to the production of trimethylcyclododecatriene in a continuous or discontinuous method, by the trimerisation of isoprene in the presence of a catalyst system and a solvent. The raw trimethylcyclododecatriene obtained can be isolated by distillation. The dimethylcyclooctadiene formed as a by-product can also be isolated from the raw product.
摘要:
The invention relates to a method for processing a reaction mixture (R G ) containing cyclododecatriene and an active catalyst system (K), which contains an aluminum-organic compound. Said method comprises the following steps: a) the reaction mixture (R G ) is brought into contact with gaseous ammonia to obtain a first mixture (G1); b) the first mixture (G1) is brought into contact with water to obtain a second mixture (G2); c) cyclododecatriene is separated from the second mixture (G2) by distillation.
摘要:
Die vorliegende Erfindung beschreibt die Herstellung von Cyclododecatrien in einem kontinuierlichen oder diskontinuierlichen Verfahren durch Trimerisierung von Butadien in Gegenwart eines Katalysatorsystems und eines Lösungsmittels. Wobei das erhaltene roh- Cyclododecatrien mittels Destillation isoliert werden kann. Das als Nebenprodukt gebildete Cyclooctadien kann ebenfalls aus dem Rohprodukt isoliert werden.
摘要:
Es wird ein Verfahren zur Herstellung von Cyclododecatrien an einem insbesondere Nickel oder Titan enthaltenden Katalysator mit destillativer Abtrennung des Roh-Cyclododecatriens und 50 % bis 100 %iger Rückführung des Katalysators beschrieben.
摘要:
The present invention relates to a composite catalyst, preparation process thereof, and process for catalyzing the trimerization of butadiene using the composite catalyst. The composite catalyst comprises: (A) a titanium compound catalyst active component, (B) an organometallic compound co-catalyst component, (C) a sulfoxide compound catalyst-modifying component, (D) a monoester compound catalyst-modifying component, and (E) a solvent component. The composite catalyst has advantages of excellent selectivity, high catalytic activity, easy preparation and so on.
摘要:
In a process of cyclodimerizing a conjugated diene to form a cycloalkene using a soluble iron complex as catalyst, the improvement comprises using as an inhibitor of diene polymerization, at least one hindered phenol.