Topic
Sodium metaborate
About: Sodium metaborate is a research topic. Over the lifetime, 366 publications have been published within this topic receiving 4361 citations. The topic is also known as: NaBO2 & Sodium borate.
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TL;DR: In this paper, a method for NaBH4 regeneration without hydrides used as starting materials for the reduction process was developed for the first time without using hydride starting materials.
Abstract: Sodium borohydride (NaBH4) is regarded as an excellent hydrogen-generated material, but its irreversibility of hydrolysis and high cost of regeneration restrict its large-scale application. In this study a convenient and economical method for NaBH4 regeneration is developed for the first time without hydrides used as starting materials for the reduction process. The real hydrolysis by-products (NaBO2·2H2O and NaBO2·4H2O), instead of dehydrated sodium metaborate (NaBO2), are applied for the regeneration of NaBH4 with Mg at room temperature and atmospheric pressure. Therefore, the troublesome heat-wasting process to obtain NaBO2 using a drying procedure at over 350 °C from NaBO2·xH2O is omitted. Moreover, the highest regeneration yields of NaBH4 are achieved to date with 68.55% and 64.06% from reaction with NaBO2·2H2O and NaBO2·4H2O, respectively. The cost of NaBH4 regeneration shows a 34-fold reduction compared to the previous study that uses MgH2 as the reduction agent, where H2 is obtained from a separate process. Furthermore, the regeneration mechanism of NaBH4 is clarified and the intermediate compound, NaBH3(OH), is successfully observed for the first time during the regeneration process.
299 citations
TL;DR: In this article, a concept for converting NaBO 2 back to NaBH 4 using coke or methane is described, where the authors show that the yield increased to a maximum value (97-98%) at 550° C under 7 MPa, but the value was independent of time.
241 citations
TL;DR: In this paper, the interfacial tension, contact angle, emulsification and emulsion properties of cetyltrimethylammonium bromide (CTAB), sodium dodecyl sulfate (SDS) and polysorbate 80 (Tween 80) surfactants against crude oil have been investigated in presence of sodium chloride (NaCl) and alkalis viz. sodium hydroxide (NaOH), sodium carbonate (Na 2 CO 3 ), ammonium hydroxides (NH 4 OH), sodium metaborate(SMB) and
236 citations
TL;DR: In this paper, the authors developed a hydrogen generator that generates high purity hydrogen gas from the aqueous solution of sodium borohydride, NaBH 4, using a Pt-LiCoO 2 -coated honeycomb monolith.
165 citations
TL;DR: In this article, the regeneration of NaBH4 by ball milling the byproduct, NaBO2·2H2O or NaBO·4H 2O, with MgH2 at room temperature and atmospheric pressure without any further post-treatment.
151 citations