A5064970210- Membrane-based Ion Separation Techniques
- Advanced Chemical Sensor Technologies
- Membrane Separation Technologies
- Fuel Cells and Related Materials
- Analytical Chemistry and Chromatography
- Analytical Chemistry and Sensors
- Extraction and Separation Processes
- Catalytic Processes in Materials Science
- Analytical Methods in Pharmaceuticals
- Zeolite Catalysis and Synthesis
- Electrocatalysts for Energy Conversion
- Nanopore and Nanochannel Transport Studies
- Catalysis and Oxidation Reactions
- Biopolymer Synthesis and Applications
- Surfactants and Colloidal Systems
- Nanocomposite Films for Food Packaging
- Advanced battery technologies research
- Catalysis and Hydrodesulfurization Studies
- Polyoxometalates: Synthesis and Applications
- Machine Learning in Materials Science
- Protein purification and stability
- Thermodynamic properties of mixtures
- Rheology and Fluid Dynamics Studies
- Chemical Synthesis and Reactions
- Tactile and Sensory Interactions
Purdue University West Lafayette
2020-2023
Jaypee Institute of Information Technology
2022
Central Salt and Marine Chemicals Research Institute
2006-2011
Council of Scientific and Industrial Research
2008-2011
Jiwaji University
2003
University of Allahabad
1969-1972
Abstract In heterogeneous catalysis, olefin oligomerization is typically performed on immobilized transition metal ions, such as Ni 2+ and Cr 3+ . Here we report that silica-supported, single site catalysts containing immobilized, main group Zn Ga ion sites catalyze ethylene propylene to an equilibrium distribution of linear olefins with rates similar The molecular weight products formed , while forms higher olefins. situ spectroscopic computational studies suggest unexpectedly occurs by the...
This mini-review discusses the mechanistic details underlying activation and deactivation behavior, kinetics selectivity among alkene isomer products, observed on Ni-based ordered porous materials during light oligomerization.
A method for the preparation of highly conductive and stable organic-inorganic nanocomposite polyelectrolyte membranes with controlled spacing between inorganic segment covalently bound sulfonic acid functional groups has been established. These were prepared by condensation polymerization silica precursor (tetraethylorthosilicate) in dimethylacetamide presence poly(ethylene glycol) (PEG) desired molecular weight, sulfonated poly(styrene-co-maleic anhydride) was attached to polymeric...
An electrochemical membrane reactor based on an in-house-prepared anion-exchange was developed to achieve single-step separation and acidification (ion substitution) of lactates lactic acid. The physicochemical properties the under standard operating conditions reveal its suitability for proposed reactor. Experiments using synthetic solutions sodium ammonium different concentrations were carried out study feasibility process. Electrochemical reactions occurring at cathode anode are proposed....
Isolated Ni(II) sites supported on zeolites and other porous materials transform in situ during alkene dimerization to form active Ni(II)-alkyl centers, their density influences the kinetic orders mechanisms of deactivation Ni-Beta ethene (453 K). containing high Ni site densities shows rates that are second-order Ni, consistent with a dual-site mechanism involving formation unreactive Ni-alkyl-Ni intermediates, as confirmed by DFT calculations. Under same reaction conditions, contrast, low...
A simple membrane process for the protein fractionation under coupled driving forces (pressure and potential difference) has been developed using acidic functionalized (sulphonated, carboxyleted, phosphorylated) ultrafilter membranes, based on interpolymer of poly(vinyl chloride) (PVC) styrene-divinyl benzene (DVB) copolymer. Introduction different functional groups was confirmed by Fourier transform infrared (FTIR), CHNS analysis, ion-exchange capacity measurements. Molecular weight cut off...
This article presents an efficient electro-membrane reactor with three compartments (EMR-3) for in situ ion substitution and recovery of ascorbic acid (ASH) from its sodium salt (ASNa). In substitution, separation, ASH ASNa were achieved by EMR–3 using the ion-exchange membranes (cation-exchange membranes: CEMs), based on principle electro-electrodialysis. Process performances electrodialysis (ED) compared. Under optimum operating conditions at 3.0 V cm−1 applied voltage (after passage 3.41...
This paper describes the implementation of a prototype device for individuals dealing with both visual and hearing impairment to communicate. is carried out help speech input system braille decoder. The processed through machine learning model which recognizes spoken words, convert words text, capitalize each letter in word send respective ASCII code custom designed decoder Raspberry pi 4B module. using logic gates are further implemented n-type p-type MOSFETs. proposed provides an output...