نتایج جستجو برای: sodium borohydride nabh4

تعداد نتایج: 188807  

Nuclear quadrupole resonance (NQR) spectroscopy is an accurate method for determination of electric charge distribution around quadrupolar nuclei. Using ab initio computational methods, it is possible to calculate the Nuclear Quadrupole Coupling Constants (NQCCs) with high accuracy and obtain the useful structural information by using these parameters. Sodium Borohydride, NaBH4, is a metal hydr...

2014
Jinsong Zhang Yuan Zheng Jay P. Gore Issam Mudawar Timothy Fisher

Sodium borohydride (NaBH4) hydrogen storage systems offer many advantages for hydrogen storage applications. The physical processes inside a NaBH4 packed bed reactor involve multi-component and multi-phase flow and multi-mode heat and mass transfer. These processes are also coupled with reaction kinetics. To guide reactor design and optimization, a reactor model involving all of these processes...

Journal: :Journal of environmental chemical engineering 2021

As catalytic hydrogenation is validated as one of the most useful approach to reduce a potential carcinogenic bromate in water, usage continuous purge H2 gas and precious metal catalysts are typically required, making it less feasible for practical implementation. Since sodium borohydride (NaBH4) represents alternative source releasing non-precious (cobalt (Co)) usually required accelerate hydr...

2007
Jinsong Zhang Yuan Zheng Jay P. Gore Issam Mudawar

Sodium borohydride (NaBH4) hydrogen storage systems offer many advantages for hydrogen storage applications. The physical processes nside a NaBH4 packed bed reactor involve multi-component and multi-phase flow and multi-mode heat and mass transfer. These processes are lso coupled with reaction kinetics. To guide reactor design and optimization, a reactor model involving all of these processes i...

Journal: :Nanoscale 2013
Dong Yao Yi Liu Wujun Zhao Haotong Wei Xintao Luo Zhennan Wu Chunwei Dong Hao Zhang Bai Yang

Despite the developments in the wet chemical synthesis of high-quality semiconductor nanocrystals (NCs) with diverse elemental compositions, telluride NCs are still irreplaceable materials owing to their excellent photovoltaic and thermoelectric performances. Herein we demonstrate the dissolution of elemental tellurium (Te) in a series of alkylamides by sodium borohydride (NaBH4) reduction at r...

2017
Hafizur Rahman Mikael E. Lindström Peter Sandström Lennart Salmén

The effect of increasing the pulp yield by the addition of sodium borohydride (NaBH4) or polysulfide (PS) in softwood kraft cooking, i.e. enhancing the retention of glucomannan, on the physical properties of low-grammage handsheets was studied. In addition to the yield improvement, an increase in tensile index was observed, especially at lower degrees of beating. These higher yield pulps showed...

Journal: :Physical chemistry chemical physics : PCCP 2014
Mainak Ganguly Chanchal Mondal Anjali Pal Saied Md Pratik Jaya Pal Tarasankar Pal

The participation of sodium borohydride (NaBH4) in hydrogen bonding interactions and transient anion radical formation has been proved. Thus, the properties of NaBH4 are extended beyond the purview of its normal reducing capability and nucleophilic property. It is reported that ortho- and para-nitroanilines (NAs) form stable aggregates only in tetrahydrofuran (THF) in the presence of NaBH4 and ...

Journal: :Communications in Physics 2021

In this research, Au nanoparticles were successfully synthesized by modified polyol method with commercial precursors to be gold (III) chloride trihydrate (HAuCl4·3H2O), ethylene glycol (EG), poly(vinylpyrrolidone) (PVP), sodium borohydride (NaBH4). The structure and properties of as-prepared have been investigated X ray diffraction (XRD), transmission electron microscopy (TEM), UV-vis-NIR spec...

2012
Biljana Šljukić Ana L. Morais Diogo M. F. Santos César A. C. Sequeira

Direct borohydride fuel cells (DBFC), which operate on sodium borohydride (NaBH4) as the fuel, and hydrogen peroxide (H2O2) as the oxidant, are receiving increasing attention. This is due to their promising use as power sources for space and underwater applications, where air is not available and gas storage poses obvious problems. One key factor to improve the performance of DBFCs concerns the...

Journal: :Current Opinion in Electrochemistry 2022

Direct borohydride fuel cells (DBFC) oxidize an easily-stored energy-dense (sodium borohydride: NaBH4), that in theory reacts ca. 400 mV below H2 and produces 8 electrons per BH4- anion. However, the oxidation reaction (BOR) does not fully meet these promises practice: electrocatalyst nature, structure state-of-surface, operating conditions (pH, concentration, temperature, fluxes) noticeably in...

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