Bioethanol: Product Separation Methods

2020 ◽  
pp. 177-193
Author(s):  
Deepansh Sharma ◽  
Anita Saini
Keyword(s):  
Product Separation

Chromatography-free product separation in the Mitsunobu reaction

2006 ◽  
Vol 47 (29) ◽  
pp. 5151-5154 ◽  
Author(s):  
Anthony J. Proctor ◽  
Kevin Beautement ◽  
John M. Clough ◽  
David W. Knight ◽  
Yingfa Li
Keyword(s):  
Free Product ◽  
Mitsunobu Reaction ◽  
Product Separation

Enhanced Reactor Performance with Pressure and Vacuum Swing Reaction

2004 ◽  
Vol 2 (1) ◽  
Author(s):  
Vincent G Gomes
Keyword(s):  
Method Of Lines ◽  
Fixed Bed ◽  
Downstream Processing ◽  
Operating Conditions ◽  
Reactor Performance ◽  
Orthogonal Collocation ◽  
The Method Of Lines ◽  
Dynamic Experiments ◽  
Product Separation ◽  
Pressure Swing

Product separation and regeneration of sorbent was accomplished in a novel pressure swing reactor through pressurisation, adsorption, blowdown and purge steps. The switching from sorption to reaction to regeneration was tested in a two bed sorption/reaction apparatus. Models developed for the mass and momentum transfer in the catalyst bed and sorber, were solved using orthogonal collocation within the method of lines. The effects of operating conditions and cycle configurations on performance were assessed. The results from dynamic experiments with propene metathesis to produce ethene and 2-butene in a fixed-bed catalytic reactor were in agreement with model predictions. Both pressure and vacuum swing demonstrated that conversion and product quality can be enhanced by periodic cycling with greater separation obtained with vacuum swing. The separation of products help reduce the downstream processing costs of exit mixtures, enable reactant utilisation by recycling and improve product handling at subsequent stages. The efficacy of the periodic separating reactor in terms of conversion, product purity and recovery were investigated.

One-Pot Synthesis of 1-Benzoylpyrene over Heteropoly Acid Catalysts

2012 ◽  
Vol 560-561 ◽  
pp. 294-299
Author(s):  
Xiao Qing Lu ◽  
Min Xing ◽  
Ai Xia Pan ◽  
Yin Yin Wu ◽  
Ji Min Xie ◽  
...  
Keyword(s):  
Benzoyl Chloride ◽  
Heteropoly Acid ◽  
Active Catalyst ◽  
Catalytic Synthesis ◽  
Acid Catalysts ◽  
Acylation Reaction ◽  
One Pot ◽  
Experimental Parameters ◽  
Product Separation ◽  
Ft Ir

A novel one-pot catalytic synthesis of 1-benzoylpyrene through acylation of pyrene with benzoyl chloride catalyzed by various Keggin type heteropoly acids (salts) was investigated. Pure 1-benzoylpyrene was obtained and the structure of 1-benzoylpyrene was identified by GC/MS, FT-IR and 1H NMR spectra. H3PW12O40 (PW) was found to be the most active catalyst in the acylation. The yield and the selectivity of 1-benzoylpyrene were up to 97.6 % and 100 %, respectively. The effects of experimental parameters on the catalytic acylation reaction and the recycling performance of PW catalyst were studied. PW catalyst shows well catalytic activity after running for 5 times. The facile product separation and the recycling performance of PW catalyst is expected to contribute to the development of clean and environmentally friendly strategy for the synthesis of 1-benzoylpyrene.

Continuous biocatalytic synthesis of (R)-2-octanol with integrated product separation

2011 ◽  
Vol 13 (6) ◽  
pp. 1430 ◽  
Author(s):  
Christina Kohlmann ◽  
Susanne Leuchs ◽  
Lasse Greiner ◽  
Walter Leitner
Keyword(s):  
Product Separation

Comparison of Different Methods for the Determination of Phenylalanine Hydroxylase Activity in Rat Liver and Euglena gracilis

1984 ◽  
Vol 39 (7-8) ◽  
pp. 728-733 ◽  
Author(s):  
Rita M. Fink ◽  
Erich F. Elstner
Keyword(s):  
Rat Liver ◽  
Euglena Gracilis ◽  
Phenylalanine Hydroxylase ◽  
Hplc Method ◽  
Enzymic Activity ◽  
Hydroxylase Activity ◽  
Product Separation ◽  
Tyrosine Concentration ◽  
Layer Chromatography

Abstract Three different methods for the determination of phenylalanine hydroxylase activity have been compared: a) Differential photometric assay of the increase in tyrosine concentration in the presence of phenylalanine; b) Product separation by thin layer chromatography and scintillation counting of the [14C]tyrosine formed;c) HPLC separation and spectrofluorometric quantification of derivatized amino acids. A comparison of the activities of phenylalanine hydroxylase in rat liver and Euglena gracilis clearly showed that only rat liver contains this enzymic activity as shown by methods b) and c) although pseudo-activity of Euglena gracilis preparations was found during the spectrophotometric test a). The HPLC method proved to be the fastest, most reliable and convenient method for direct tyrosine determination and thus for measuring phenylalanine hydroxylase activity.

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