Optimized preparation and regeneration of MFI type base catalysts for d-glucose isomerization in water

2020 ◽  
Vol 10 (10) ◽  
pp. 3232-3246
Author(s):  
Margarida M. Antunes ◽  
Auguste Fernandes ◽  
Diogo Falcão ◽  
Martyn Pillinger ◽  
Filipa Ribeiro ◽  
...  
Keyword(s):  
Catalyst Synthesis ◽  
Base Catalysts ◽  
Solid Bases ◽  
Glucose Isomerization ◽  
Enhanced Stability

Eco-friendly solid bases possessing hierarchical MFI structure for d-glucose isomerization to d-fructose. Optimizing catalyst synthesis and composition for enhanced stability.

scholarly journals Kinetic and Mechanistic Study of Glucose Isomerization Using Homogeneous Organic Brønsted Base Catalysts in Water

ACS Catalysis ◽  
2015 ◽  
Vol 5 (6) ◽  
pp. 3162-3173 ◽  
Author(s):  
Jack M. Carraher ◽  
Chelsea N. Fleitman ◽  
Jean-Philippe Tessonnier
Keyword(s):  
Mechanistic Study ◽  
Base Catalysts ◽  
Brønsted Base ◽  
Glucose Isomerization

scholarly journals Isomerization of glucose into fructose with homogenous amine-type base catalysts: amine structure, chain length, and kinetics

2019 ◽  
Vol 6 (1) ◽  
Author(s):  
Libo Zhang ◽  
Bailian Deng ◽  
Nan Li ◽  
Hong Zhong
Keyword(s):  
Chain Length ◽  
Tertiary Amine ◽  
Alkyl Chain ◽  
Isomerization Reaction ◽  
Catalyst Loading ◽  
Operational Conditions ◽  
Base Catalysts ◽  
Platform Chemicals ◽  
Glucose Isomerization ◽  
Amine Catalysts

Abstract Three homogeneous organosilanes amine and aliphatic primary amine were used as amine catalysts to evaluate their catalytic activity and kinetic towards glucose isomerization. Catalysts structure (primary, secondary, tertiary amine), terminal groups and alkyl chain length were investigated and compared elaborately. Result showed organosilanes tertiary amine behaved the best and amine generated OH− and amine itself contributed the isomerization reaction. The generated acidic by-product not only decreased fructose selectivity but also affected glucose conversion kinetic. The effect of siloxane (–Si–O–CH3) substituent with methyl (–CH3) can be insignificant, but it provided guiding significance for selecting amine-type homogeneous or grafted amine catalysts for glucose isomerization reaction. Longer alkyl chain resulted in lower glucose conversion because of the alkyl chain curls that would weaken the amine catalytic effect and hydration ability. Catalyst loading and initial glucose concentration investigations further showed that amine would effectively catalyze the isomerization reaction under varied operational conditions. This work will provide more details about organic amine catalysts on glucose isomerization into fructose and promote synthesis of platform chemicals in the applications of biorenewable chemicals and fuel.

A Review on Biological Properties and Synthetic Methodologies of the Diarylpentadienones

2020 ◽  
Vol 20 ◽  
Author(s):  
Maryam Aisyah Abdullah ◽  
Siti Munirah Mohd Faudzi ◽  
Nadiah Mad Nasir
Keyword(s):  
Biological Properties ◽  
Review Article ◽  
High Potential ◽  
One Pot ◽  
One Pot Synthesis ◽  
Structure Activity ◽  
Synthetic Methodologies ◽  
Relationship Of ◽  
Effective Drugs ◽  
Enhanced Stability

Abstract:: Medicinal chemists have continuously shown interest in new curcuminoid derivatives, the diarylpentadienones, owing to their enhanced stability feature and easy preparation using a one-pot synthesis. Thus far, methods such as Claisen-Schmidt condensation and Julia-Kocienski olefination have been utilised for the synthesis of these compounds. Diarylpentadienones possess a high potential as a chemical source for designing and developing new and effective drugs for the treatment of diseases, including inflammation, cancer, and malaria. In brief, this review article focuses on the broad pharmacological applications and the summary of the structure-activity relationship of molecules which can be employed to further explore the structure of diarylpentadienone. The current methodological developments towards the synthesis of diarylpentadienones are also discussed.

Improving the Efficacy of Anticancer Drugs via Encapsulation and Acoustic Release

2018 ◽  
Vol 18 (10) ◽  
pp. 857-880 ◽  
Author(s):  
Salma E. Ahmed ◽  
Nahid Awad ◽  
Vinod Paul ◽  
Hesham G. Moussa ◽  
Ghaleb A. Husseini
Keyword(s):  
Drug Delivery ◽  
Drug Release ◽  
Drug Delivery Systems ◽  
Delivery Systems ◽  
Special Focus ◽  
Nano Drug Delivery ◽  
Medical Researchers ◽  
History Of ◽  
Overall Performance ◽  
Enhanced Stability

Conventional chemotherapeutics lack the specificity and controllability, thus may poison healthy cells while attempting to kill cancerous ones. Newly developed nano-drug delivery systems have shown promise in delivering anti-tumor agents with enhanced stability, durability and overall performance; especially when used along with targeting and triggering techniques. This work traces back the history of chemotherapy, addressing the main challenges that have encouraged the medical researchers to seek a sanctuary in nanotechnological-based drug delivery systems that are grafted with appropriate targeting techniques and drug release mechanisms. A special focus will be directed to acoustically triggered liposomes encapsulating doxorubicin.

EFFECT OF ENZYMES ON GLUCOSE ISOMERIZATION NONLINEAR REACTION CHROMATOGRAPHY

2014 ◽  
Vol 37 (17) ◽  
pp. 2389-2402
Author(s):  
Xiuhong Wu ◽  
Bingchang Lin ◽  
Yanling Quan ◽  
PeiXun Zhu ◽  
Hong Gao ◽  
...  
Keyword(s):  
Nonlinear Reaction ◽  
Glucose Isomerization ◽  
Reaction Chromatography
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