摘要:
FOR ALKYLATING AN AROMATIC OR ALIPHATIC HYDROCARBON WITH AN OLEFIN, THERE ARE EMPLOYED LIQUID CATALYST COMPOSITIONS CONTAINING, OPTIONALLY IN AN INERT HYDROCARBON SOLVENT, A LEWIS ACID OR BRONSTED ACID AND A SULFONE OF FORMULA R-SO2-R'', WHEREIN R AND R'' ARE EACH SEPARATELY A MONOVALENT RADICALS CONTAINING FROM 1 TO 8 CARBON ATOMS OR FORM TOGETHER A DIVALENT RADICAL HAVING FROM 3 TO 12 CARBON ATOMS, THE ACID CONCENTRATION BEING AT LEAST 10-5 MOLES PER LITER OF SULFONE AND AT MOST THE SATURATION CONCENTRATION WITHOUT EXCEEDING 5 MOLES PER LITER OF SULFONE.
摘要:
The invention discloses a continuous process for producing high-pure quadricyclane, in which “a reaction-rectification integral process” or “a reaction followed by rectification process” may be employed. The two processes both use a novel composite catalyst which is obtained by loading an organic photo-sensitizer on a solid photocatalyst, and the composite catalyst has a high activity and a good stability. In the reaction-rectification integral process, the composite catalyst is used by being blended with rectification fillers or covering the rectification fillers, so as to achieve the integration of the reaction and the rectification. In the reaction followed by rectification process, the composite catalyst and the rectification fillers are placed separately from each other. The two processes achieve a relatively short residence time of reactants, produce highly-pure quadricyclane, and reduce the formation of cokes.
摘要:
An exo-tetrahydrodicyclopentadiene is produced from endo-tetrahydrodicyclopentadiene through isomerization reaction. An acidic ionic liquid is used in the isomerization. The isomerization of endo-tetrahydrodicyclopentadiene gives a reaction conversion and a selectivity both higher than 99%. Besides, the ionic liquid used is environmental-friendly and recyclable.
摘要:
Porous microcomposites have been prepared from perfluorinated ion-exchange polymer and metal oxides such as silica using the sol-gel process. Such microcomposites possess high surface area and exhibit extremely high catalytic activity.
摘要:
Porous microcomposites have been prepared from perfluorinated ion-exchange polymer and metal oxides such as silica using the sol-gel process. Such microcomposites possess high surface area and exhibit extremely high catalytic activity.
摘要:
Porous microcomposites have been prepared from perfluorinated ion-exchange polymer and metal oxides such as silica using the sol-gel process. Such microcomposites possess high surface area and exhibit extremely high catalytic activity.
摘要:
The composition is constituted by a mixture of Lewis acid corresponding to the formula MXm where:M is an atom of a metal belonging to Groups IV, V and VI of the Periodic Table of Elements,X is a halogen,m is within the range of 3 to 6,And a sulphonic acid corresponding to the general formula RF(SO.sub.3 H)p where RF represents a perfluorinated alkyl or cycloalkyl hydrocarbon radical having a number of carbon atoms ranging from 2 to 8 and p is 1 or 2.