Zeolite membrane microreactor for fine chemical production

2006 ◽  
Author(s):  
Wai Ngar Lau
2016 ◽  
Vol 9 (5) ◽  
pp. 687-695 ◽  
Author(s):  
Pablo Carbonell ◽  
Abdullah Gök ◽  
Philip Shapira ◽  
Jean‐Loup Faulon

2010 ◽  
Vol 15 (3) ◽  
pp. 294-303 ◽  
Author(s):  
Gregor Wernet ◽  
Sarah Conradt ◽  
Hans Peter Isenring ◽  
Concepción Jiménez-González ◽  
Konrad Hungerbühler

Membranes ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 627
Author(s):  
Ayumi Ikeda ◽  
Chie Abe ◽  
Wakako Matsuura ◽  
Yasuhisa Hasegawa

The separation of non-aqueous mixtures is important for chemical production, and zeolite membranes have great potential for energy-efficient separation. In this study, the influence of the framework structure and composition of zeolites on the permeation and separation performance of methanol through zeolite membranes were investigated to develop a methanol permselective zeolite membrane. As a result, the FAU-type zeolite membrane prepared using a solution with a composition of 10 SiO2:1 Al2O3:17 Na2O:1000 H2O showed the highest permeation flux of 86,600 μmol m−2 s−1 and a separation factor of 6020 for a 10 wt% methanol/methyl hexanoate mixture at 353 K. The membrane showed a molecular sieving effect, reducing the single permeation flux of alcohol with molecular size for single-component alcohols. Moreover, the permeation flux of methanol and the separation factor increased with an increase in the carbon number of the alcohols and methyl esters containing 10 wt% methanol. In this study, the permeation behavior of FAU-type zeolite membranes was also discussed based on permeation data. These results suggest that the FAU-type zeolite membrane has the potential to separate organic solvent mixtures, such as solvent recycling and membrane reactors.


Author(s):  
Leonardo Martins-Santana ◽  
Luisa C. Nora ◽  
Ananda Sanches-Medeiros ◽  
Gabriel L. Lovate ◽  
Murilo H. A. Cassiano ◽  
...  

2021 ◽  
pp. 44-53
Author(s):  
Attiya Rasool

A variety of organisms, such as bacteria, fungi, and plants, produce secondary metabolites, also known as natural products. Natural products have been a prolific source and an inspiration for numerous medical agents with widely divergent chemical structures and biological activities, including antimicrobial, immunosuppressive, anticancer, and anti-inflammatory activities, many of which have been developed as treatments and have potential therapeutic applications for human diseases. Aside from natural products, the recent development of recombinant DNA technology has sparked the development of a wide array of biopharmaceutical products, such as recombinant proteins, offering significant advances in treating a broad spectrum of medical illnesses and conditions. Fine chemicals that are physiologically active, such as pharmaceuticals, cosmetics, nutritional supplements, flavoring agents as well as additives for foods, feed, and fertilizer are produced by enzymatically or through microbial fermentation. The identification of enzymes that catalyze the target reaction makes possible to synthesis of the desired fine chemical. The genes encoding these enzymes are then introduced into suitable microbial hosts that are cultured with inexpensive, naturally abundant carbon sources, and other nutrients. Metabolic engineering create efficient microbial cell factories for producing chemicals at higher yields. In the present review, we summarize recent studies on bio-based fine chemical production and assess the potential of synthetic bioengineering for further improvement their productivity.


2014 ◽  
Vol 13 (1) ◽  
Author(s):  
Kiyotaka Y Hara ◽  
Michihiro Araki ◽  
Naoko Okai ◽  
Satoshi Wakai ◽  
Tomohisa Hasunuma ◽  
...  

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