A Molecular Picture of Diffusion Controlled Reaction: Role of Microviscosity and Hydration on Hydrolysis of Benzoyl Chloride at a Polymer Hydration Region

Langmuir ◽  
2009 ◽  
Vol 25 (19) ◽  
pp. 11336-11343 ◽  
Author(s):  
Pramod Kumar Verma ◽  
Rajib Kumar Mitra ◽  
Samir Kumar Pal
Keyword(s):  
Benzoyl Chloride ◽  
Diffusion Controlled ◽  
Hydrolysis Of ◽  
Diffusion Controlled Reaction ◽  
Molecular Picture ◽  
Polymer Hydration

Influence of counterion species on the dehydroxylation of Ca2+-, Mg2+-, Na+- and K+-exchanged Wyoming montmorillonite

2000 ◽  
Vol 64 (2) ◽  
pp. 337-346 ◽  
Author(s):  
H. J. Bray ◽  
S. A. T. Redfern
Keyword(s):  
Activation Energy ◽  
X Ray Diffraction ◽  
Interlayer Cation ◽  
Reaction Step ◽  
Octahedral Sheet ◽  
X Ray ◽  
First Order ◽  
Diffusion Controlled ◽  
Diffusion Controlled Reaction

AbstractThe dehydroxylation of Ca-, K-, Mg- and Na-saturated Wyoming montmorillonite has been studied by thermogravimetry (TG), infrared (IR) spectroscopy and X-ray diffraction (XRD). Samples saturated with either Ca2+ or Mg2+ show a predominantly diffusion-controlled reaction step, whereas Wyoming montmorillonite with Na+ and K+ in the interlayer exhibit control closer to first order. The activation energy of dehydroxylation is not significantly correlated to the type of interlayer cation present, in turn demonstrating that the role of vacancy location in the octahedral sheet is more significant a control on dehydroxylation.

scholarly journals Steroid Sulphatase and Its Inhibitors: Past, Present and Future

Molecules ◽  
2021 ◽  
Vol 26 (10) ◽  
pp. 2852
Author(s):  
Paul A. Foster
Keyword(s):  
Good Evidence ◽  
The Past ◽  
Steroid Sulphatase ◽  
University Of Oxford ◽  
Therapeutic Value ◽  
Breast And Prostate Cancer ◽  
The University ◽  
Further Development ◽  
Hydrolysis Of

Steroid sulphatase (STS), involved in the hydrolysis of steroid sulphates, plays an important role in the formation of both active oestrogens and androgens. Since these steroids significantly impact the proliferation of both oestrogen- and androgen-dependent cancers, many research groups over the past 30 years have designed and developed STS inhibitors. One of the main contributors to this field has been Prof. Barry Potter, previously at the University of Bath and now at the University of Oxford. Upon Prof. Potter’s imminent retirement, this review takes a look back at the work on STS inhibitors and their contribution to our understanding of sulphate biology and as potential therapeutic agents in hormone-dependent disease. A number of potent STS inhibitors have now been developed, one of which, Irosustat (STX64, 667Coumate, BN83495), remains the only one to have completed phase I/II clinical trials against numerous indications (breast, prostate, endometrial). These studies have provided new insights into the origins of androgens and oestrogens in women and men. In addition to the therapeutic role of STS inhibition in breast and prostate cancer, there is now good evidence to suggest they may also provide benefits in patients with colorectal and ovarian cancer, and in treating endometriosis. To explore the potential of STS inhibitors further, a number of second- and third-generation inhibitors have been developed, together with single molecules that possess aromatase–STS inhibitory properties. The further development of potent STS inhibitors will allow their potential therapeutic value to be explored in a variety of hormone-dependent cancers and possibly other non-oncological conditions.

scholarly journals Regulation of the synthesis and hydrolysis of ATP by mitochondrial ATPase. Role of Mg2+.

1983 ◽  
Vol 258 (22) ◽  
pp. 13673-13679 ◽  
Author(s):  
A Gómez-Puyou ◽  
G Ayala ◽  
U Muller ◽  
M Tuena de Gómez-Puyou
Keyword(s):  
Mitochondrial Atpase ◽  
Hydrolysis Of

The role of pretreatment in improving the enzymatic hydrolysis of lignocellulosic materials

2016 ◽  
Vol 199 ◽  
pp. 49-58 ◽  
Author(s):  
Shaoni Sun ◽  
Shaolong Sun ◽  
Xuefei Cao ◽  
Runcang Sun
Keyword(s):  
Enzymatic Hydrolysis ◽  
Lignocellulosic Materials ◽  
Hydrolysis Of
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