3D flower-like CoNi2S4/polyaniline with high performance for glycerol electrooxidation in an alkaline medium

2019 ◽  
Vol 43 (26) ◽  
pp. 10366-10375 ◽  
Author(s):  
Jiawen Du ◽  
Aijuan Xie ◽  
Shichao Zhu ◽  
Zhichen Xiong ◽  
Xianglang Yu ◽  
...  
Keyword(s):  
Alkaline Medium ◽  
High Performance ◽  
Glycerol Electrooxidation

Schematic of the fabrication of CoNi2S4/PANI.

scholarly journals EVALUATION OF INNOVATED FORMULA OF BISACODYL SUPPOSITORY FOLLOWING THE DISSOLUTION PROFILE AND STABILITY DATA USING DEVELOPED HIGH-PERFORMANCE LIQUID CHROMATOGRAPHY METHOD

2020 ◽  
Author(s):  
KAHTAN J HASSON ◽  
ESRAA G JABAR ◽  
IHAB I ALKHALIFA
Keyword(s):  
High Performance Liquid Chromatography ◽  
Liquid Chromatography ◽  
Alkaline Medium ◽  
High Performance ◽  
Inclusion Complexation ◽  
Stability Study ◽  
Dissolution Profile ◽  
Chromatography Method ◽  
Beta Cyclodextrin ◽  
Liquid Chromatography Method

Objective: Bisacodyl is a laxative drug used in the treatment of constipation, it is soluble in mineral acids, but it is practically insoluble in water. Therefore, it is very hard task to dissolve bisacodyl in alkaline medium so the objective of this study was the development of proper dissolution method for a new formulation of bisacodyl suppositories in a medium simulated to rectal region. Obviously, most of the bisacodyl suppositories preparation products will yield low percentages of dissolution in the alkaline medium of phosphate buffer pH 7.2. Methods: Preparation inclusion complex of bisacodyl with the solubilizing agent beta-cyclodextrin then incorporated in a suppository base. The quantitative analysis of bisacodyl in suppositories was carried by a developed and validated high-performance liquid chromatography method. Results and Discussion: The dissolution rates for the innovated formulation of bisacodyl complexed with beta-cyclodextrin suppositories were in average of 97.5% and the stored suppositories of this formulation maintained their specified physical and chemical properties along the real stability study. Conclusion: The application of the inclusion complexation technique of bisacodyl with beta-cyclodextrin in the production of suppositories enhances the dissolution rate and improves the stability of suppositories performance.

New Preparation of PdNi/C and PdAg/C Nanocatalysts for Glycerol Electrooxidation in Alkaline Medium

2013 ◽  
Vol 4 (3) ◽  
pp. 167-178 ◽  
Author(s):  
Yaovi Holade ◽  
Cláudia Morais ◽  
S. Arrii-Clacens ◽  
K. Servat ◽  
T. W. Napporn ◽  
...  
Keyword(s):  
Alkaline Medium ◽  
Glycerol Electrooxidation

Promotional Effect of Ag on the Catalytic Activity of Au for Glycerol Electrooxidation in Alkaline Medium

2015 ◽  
Vol 2 (7) ◽  
pp. 1036-1041 ◽  
Author(s):  
Amanda C. Garcia ◽  
Julia Caliman ◽  
Eduardo B. Ferreira ◽  
Germano Tremiliosi-Filho ◽  
José J. Linares
Keyword(s):  
Catalytic Activity ◽  
Alkaline Medium ◽  
Glycerol Electrooxidation ◽  
Promotional Effect

Pristine S,N-containing Mn-based metal organic framework nanorods enable efficient oxygen reduction electrocatalysis

2020 ◽  
Vol 49 (14) ◽  
pp. 4336-4342 ◽  
Author(s):  
Shujun Chao ◽  
Qingyun Xia ◽  
Yingling Wang ◽  
Wenge Li ◽  
Wenge Chen
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Hydrothermal Method ◽  
Alkaline Medium ◽  
High Performance ◽  
Metal Organic Framework ◽  
Reduction Reaction ◽  
Metal Organic ◽  
Organic Framework

Uniform MnII[(Tdc)(4,4′-Bpy)]n nanorods have been synthesized by a hydrothermal method and they show high performance for the oxygen reduction reaction in alkaline medium.

Glycerol Waste Valorization to Mesoxalic Acid Over a Bimetallic Pt-Pd/CNT Catalyst in Alkaline Medium

2020 ◽  
Vol 20 (9) ◽  
pp. 5916-5927
Author(s):  
Muhammad Sheraz Ahmad ◽  
Chin Kui Cheng ◽  
Sharanjit Singh ◽  
Huei Ruey Ong ◽  
Hamidah Abdullah ◽  
...  
Keyword(s):  
Alkaline Medium ◽  
High Performance ◽  
Value Added ◽  
Linear Sweep Voltammetry ◽  
Poor Performance ◽  
Oxidation Products ◽  
Glyceric Acid ◽  
Monometallic Catalysts ◽  
Tartronic Acid ◽  
Electro Oxidation

Glycerol electro-oxidation offers a green route to produce the high value added chemicals. Here in, we report the glycerol electro-oxidation over a series of multi walled carbon nano tubes supported monometallic (Pt/CNT and Pd/CNT) and bimetallic (Pt-Pd/CNT) catalysts in alkaline medium. The cyclic voltammetry, linear sweep voltammetry and chronoamperometry measurements were used to evaluate the activity and stability of the catalysts. The Pt-Pd/CNT electrocatalyst exhibited the highest activity in terms of higher current density (129.25 A/m2) and electrochemical surface area (382 m2/g). The glycerol electro-oxidation products formed at a potential of 0.013 V were analyzed systematically by high performance liquid chromatography. Overall, six compounds were found including mesoxalic acid, 1,3-dihydroxyacetone, glyceraldehyde, glyceric acid, tartronic acid and oxalic acid. A highest mesoxalic acid selectivity of 86.42% was obtained for Pt-Pd/CNT catalyst while a maximum tartronic acid selectivity of 50.17% and 46.02% was achieved for Pd/CNT and Pt/CNT respectively. It was found that the introduction of Pd into Pt/CNT lattice facilitated the formation of C3 products in terms of maximum selectivity achieved (86.42%) while the monometallic catalysts (Pd/CNT and Pt/CNT) showed a poor performance in comparison to their counterpart.

A remarkable activity of glycerol electrooxidation on gold in alkaline medium

2012 ◽  
Vol 59 ◽  
pp. 156-159 ◽  
Author(s):  
Jian-hua Zhang ◽  
Ying-jun Liang ◽  
Nan Li ◽  
Zhuo-ying Li ◽  
Chang-wei Xu ◽  
...  
Keyword(s):  
Alkaline Medium ◽  
Glycerol Electrooxidation
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