Kaitlin DeSalvo - Des Plaines IL, US Alakananda Bhattacharyya - Glen Ellyn IL, US
International Classification:
C07C 51/42
US Classification:
562485
Abstract:
Methods of purifying crude or contaminated terephthalic acid using ionic liquids are described. Crude or contaminated terephthalic acid is contacted with a solvent in the absence of an oxidizing agent to form a purified product having at least 30 wt % less 4-carboxybenzaldehyde compared to the crude or contaminated terephthalic acid. The solvent consists essentially of an ionic liquid, optionally an ionic solid or a material capable of forming an ionic salt, and optionally an aqueous solvent. The ionic liquid is formed in situ from at least one ionic liquid precursor.
Hydrochloric Acid Stripping Process For Ionic Liquid Regeneration Process
- Des Plaines IL, US Avram M. Buchbinder - Chicago IL, US Paul Olson - Mount Prospect IL, US Susie C. Martins - Carol Stream IL, US Kaitlin M. DeSalvo - Chicago IL, US Douglas A. Nafis - Mount Prospect IL, US
International Classification:
B01J 31/40 B01J 38/68 C07F 9/02 B01J 31/02
Abstract:
A method for regenerating deactivated acidic ionic liquid is described. The method involves reducing a level of free hydrochloric acid in the deactivated acidic ionic liquid in a removal zone using at least one of heat, a stripping fluid, reduced pressure, and liquid-liquid extraction to form a deactivated acidic ionic liquid having a reduced level of free hydrochloric acid; and regenerating the deactivated acidic ionic liquid having the reduced level of free hydrochloric acid.
Regeneration Of An Acidic Catalyst By Borane Addition
- Des Plaines IL, US Alakananda Bhattacharyya - Glen Ellyn IL, US Susie C. Martins - Carol Stream IL, US Kaitlin M. DeSalvo - Chicago IL, US Douglas A. Nafis - Mt. Prospect IL, US
Assignee:
UOP LLC - Des Plaines IL
International Classification:
B01J 31/40 B01J 38/56 B01J 38/50
Abstract:
A method of regenerating an acidic catalyst is described. A borane compound is contacted with an acidic catalyst that contains conjunct polymer, which releases the conjunct polymer from the acidic catalyst. The acidic catalyst can then be re-activated with acid. The conjunct polymer can be separated from the borane compound, and the borane compound can be recycled.
Hydrocarbon Conversion Process Including Catalyst Regeneration
- Des Plaines IL, US Erin M. Broderick - Arlington Heights IL, US Douglas A. Nafis - Mt. Prospect IL, US Kaitlin M. DeSalvo - Chicago IL, US Stuart Smith - Lake Zurich IL, US Alakananda Bhattacharyya - Glen Ellyn IL, US
Assignee:
UOP LLC - Des Plaines IL
International Classification:
C07C 2/62
Abstract:
A hydrocarbon conversion process is described. The process includes contacting a hydrocarbon feed with an acidic catalyst under hydrocarbon conversion conditions in a hydrocarbon conversion zone. The hydrocarbon feed reacts to form a mixture comprising reaction products, the acidic catalyst, and deactivated acidic catalyst containing conjunct polymer. The mixture is separated into at least two streams, a first stream comprising the reaction products and a second stream comprising the deactivated acidic catalyst. The reaction products are recovered. The deactivated acidic catalyst is contacted with at least one silane or borane compound in a regeneration zone under regeneration conditions, the conjunct polymer reacting with the at least one silane or borane compound resulting in a catalyst phase and an organic phase containing the conjunct polymer and at least one silyl or boryl compound.