Abstract:
In a process for producing a mixture of cyclohexanone and cyclohexanol, a feed comprising cyclohexanone is contacted with hydrogen in the presence of a hydrogenation catalyst under hydrogenation conditions effective to convert part of the cyclohexanone in the feed into cyclohexanol and thereby produce a hydrogenation product containing cyclohexanone and cyclohexanol. A mixture of cyclohexanone and cyclohexanol is then obtained from the hydrogenation product.
Abstract:
Catalysts and processes for producing catalysts for neopentane production are provided herein. A process includes reducing a catalyst precursor comprising a transition metal and an inorganic support at a temperature less than 500° C. to produce a catalyst. Also provided herein are processes to produce neopentane using the catalysts described herein and neopentane compositions produced therefrom.
Abstract:
A cleavage process for making phenol and/or cyclohexanone, the process comprising: (A) providing a feed comprising cyclohexylbenzene hydroperoxide; (B) contacting the feed with a catalyst under cleavage reaction conditions effective to produce a cleavage effluent comprising phenol and cyclohexanone, the catalyst having a collidine uptake of at least 20 μmol per gram of the catalyst and comprising an aluminosilicate molecular sieve of the FAU-type, an oxide binder, and a clay.
Abstract:
A process for producing phenol is described in which a feed comprising alkylbenzene hydroperoxide is contacted with a cleavage catalyst under cleavage conditions effective to convert at least part of the hydroperoxide into phenol, the process is characterized in that at least a part of the deactivated catalyst is regenerated using a oxidizing material comprising hydrogen peroxide and then return to the process. A method of regenerating the cleavage catalyst is also described.
Abstract:
Disclosed herein are processes for producing neopentane. The processes generally relate to demethylating diisobutylene to produce neopentane. The diisobutylene may be provided by the dimerization of isobutylene.
Abstract:
A method to determine the strength of an acid in a medium is disclosed. The method includes (I) providing multiple samples comprising trimethylphosphine oxide (TMPO), the acid, and the medium, wherein the multiple samples have different [H+]/[TMPO] ratios, [H+] is the concentration of hydrons in the sample in mole·liter−1, and [TMPO] is the concentration of TMPO in the sample in mole·liter−1. (II) The 31P chemical shifts of the multiple samples are measured by 31P NMR and compared to standardized samples to determine the acid strength of the medium.
Abstract:
Disclosed herein is a process for producing phenol. The process includes oxidizing at least a portion of a feed comprising cyclohexylbenzene to produce an oxidation composition comprising cyclohexyl-1-phenyl-1-hydroperoxide. The oxidation composition may then be cleaved in the presence of an acid catalyst to produce a cleavage reaction mixture comprising the acid catalyst, phenol and cyclohexanone. At least a portion of the cleavage reaction mixture may be neutralized with a basic material to form a treated cleavage reaction mixture. In various embodiments, the treated cleavage reaction mixture contains no greater than 50 wppm of the acid catalyst or no greater than 50 wppm of the basic material.
Abstract:
In a process for producing phenol and cyclohexanone, a cleavage feed containing greater than 40 wt % and no greater than 95 wt % cyclohexyl-1-phenyl-1-hydroperoxide, and at least 5 wt % and less than 60 wt % cyclohexylbenzene is mixed with at least phenol, cyclohexanone, water, and sulfuric acid to produce a cleavage reaction mixture containing from 15 wt % to 50 wt % phenol, from 15 wt % to 50 wt % cyclohexanone, from 1 wt % to 10 wt % cyclohexyl-1-phenyl-1-hydroperoxide, from 5 wt % to 60 wt % cyclohexylbenzene, from 0.1 wt % to 4 wt % water, and from 10 wppm to 1000 wppm sulfuric acid. The cleavage reaction mixture is then reacted at a temperature from 30° C. and to 70° C., and a pressure of at least 1 atmosphere for a time sufficient to convert at least 50% of said cyclohexyl-1-phenyl-1-hydroperoxide in said cleavage reaction mixture and produce a cleavage effluent containing phenol and cyclohexanone.
Abstract:
A process for producing phenol is described in which a feed comprising alkylbenzene hydroperoxide is contacted with a cleavage catalyst under cleavage conditions effective to convert at least part of the hydroperoxide into phenol, the process is characterized in that at least a part of the deactivated catalyst is regenerated using a oxidizing material comprising hydrogen peroxide and then return to the process. A method of regenerating the cleavage catalyst is also described.
Abstract:
Disclosed herein are processes for producing neopentane. The processes generally relate to demethylating isooctane to produce neopentane. The isooctane may be provided by the alkylation of isobutane with butylenes.