Processing of NaBH4 from NaBO2 with MgH2 by ball milling and usage as hydrogen carrier

Çakanyıldırım, Çetin; Gürü, Metin

doi:10.1016/j.renene.2010.01.001

Cited by 53 publications

(34 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Furthermore, a high NaBH4 yield of 89.78% was achieved by this method, which is the highest compared with previous studies [67,69,78]. …”

Section: Nabh 4 Regeneration Via the Reaction Between Metal Or Other mentioning

confidence: 50%

“…It was found that the regenerated NaBH4 from NaBO2•xH2O had an excellent hydrolysis property, which was similar to the commercial NaBH4. According to Figure 3, the highest system hydrogen capacity (containing water and catalyst) was 6.75 wt %, which was the highest compared with previous studies [67,69,78]. It was produced by the reaction between MgH2 and NaBO2•xH2O.…”

Section: Hydrolysis Property Of Regenerated Nabh4 Using Nabo2•xh2o Asmentioning

confidence: 77%

“…Therefore, the thermochemistry method was substituted by room temperature ball milling in this reaction. Hsueh et al [67], Kong et al [68] and Çakanyildirim et al [69] used MgH2 to react with NaBO2 by ball milling under argon. All of their NaBH4 yields were over 70%, which strongly indicated that ball milling is suitable for the reaction between MgH2 and NaBO2.…”

Section: Nabh4 Regeneration Via the Reaction Between Metal Or Other Hmentioning

confidence: 99%

See 2 more Smart Citations

A Recycling Hydrogen Supply System of NaBH4 Based on a Facile Regeneration Process: A Review

Ouyang

Zhong

et al. 2018

Inorganics

View full text Add to dashboard Cite

NaBH 4 hydrolysis can generate pure hydrogen on demand at room temperature, but suffers from the difficult regeneration for practical application. In this work, we overview the state-of-the-art progress on the regeneration of NaBH 4 from anhydrous or hydrated NaBO 2 that is a byproduct of NaBH 4 hydrolysis. The anhydrous NaBO 2 can be regenerated effectively by MgH 2 , whereas the production of MgH 2 from Mg requires high temperature to overcome the sluggish hydrogenation kinetics. Compared to that of anhydrous NaBO 2 , using the direct hydrolysis byproduct of hydrated NaBO 2 as the starting material for regeneration exhibits significant advantages, i.e., omission of the high-temperature drying process to produce anhydrous NaBO 2 and the water included can react with chemicals like Mg or Mg 2 Si to provide hydrogen. It is worth emphasizing that NaBH 4 could be regenerated by an energy efficient method and a large-scale regeneration system may become possible in the near future.

show abstract

“…Furthermore, a high NaBH4 yield of 89.78% was achieved by this method, which is the highest compared with previous studies [67,69,78]. …”

Section: Nabh 4 Regeneration Via the Reaction Between Metal Or Other mentioning

confidence: 50%

Section: Hydrolysis Property Of Regenerated Nabh4 Using Nabo2•xh2o Asmentioning

confidence: 77%

Section: Nabh4 Regeneration Via the Reaction Between Metal Or Other Hmentioning

confidence: 99%

See 1 more Smart Citation

A Recycling Hydrogen Supply System of NaBH4 Based on a Facile Regeneration Process: A Review

Ouyang

Zhong

et al. 2018

Inorganics

View full text Add to dashboard Cite

show abstract

“…Magnezyumun %1, %3 ve %5 fazlası ile yapılan indirgeme çalışmalarının grafikleri karşılaştırıldığında, magnezyumun aşırı miktarı arttırıldıkça magnezyum oksit fazının daha belirgin bir şekilde ortaya çıktığı söylenebilir. Bunun nedeni, indirgeyici reaktif olan magnezyumun oksijenle bileşik oluşturma isteğinin fazla olmasıdır [17]. Dolayısıyla magnezyum miktarı arttıkça magnezyum oksit fazı daha belirgin hale gelmiştir.…”

Section: Materyal Ve Metot (Materials and Method)unclassified

“…Bilyalı öğütme reaktörleri, indirgeme reaksiyonlarını gerçekleştirmek amacı ile genellikle inert atmosfer ortamında kullanılır. Mekanokimyasal reaktörler, nano ölçekli parçacıkların birbirlerini ezmesi ile proses sürecini hızlandırır [17].…”

Section: Mekanokimyasalunclassified

Mekanoki̇myasal Yöntemle Bor Oksi̇tten Elementel Bor Sentezlenmesi̇ Ve Karakteri̇zasyonu

Gokdai

Gürü

Toğrul

2016

Gazi Üniversitesi Mühendislik-Mimarlık Fakültesi Dergisi

Self Cite

View full text Add to dashboard Cite

ÖZETBu çalışmada, susuz bor oksitten yola çıkarak katma değeri yüksek bor uç ürünlerinden biri olan elementel borun mekanokimyasal yöntem ile sentezi ve karakterizasyonu gerçekleştirilmiştir. İndirgeme işleminde metalik halde Mg tozu kullanılmıştır. Farklı öğütme sürelerinde ve farklı tepkime oranlarında bor oksit ve magnezyum, inert atmosferde ve oda sıcaklığında öğütülmüştür. Öğütülen toza fırında ısıl işlem uygulanmıştır. Sentezlenen tozun karakterizasyonu, X-ışını kırınımı (XRD), taramalı elektron mikroskobu (SEM), enerji dağılım spektrofotometresi (EDS) ve yaş analiz yöntemleri ile gerçekleştirilmiştir. XRD analizine göre 1/3,3 toz bilya ağırlık oranında ve 600 dakika öğütme sonucunda elde edilen üründe elementel bor fazına rastlanmıştır. Yapılan seçici çözelti saflaştırma işlemlerinden sonra XRD, EDS ve yaş analiz sonuçları safsızlıkların dikkate değer ölçüde giderildiğini göstermiştir. Yaş analiz yöntemi ile borun safiyeti %95 olarak belirlenmiştir.Anahtar Kelimeler: Bor oksit, elementel bor, liç, mekanokimyasal sentez SYNTHESIS AND CHARACTERIZATION OF ELEMENTAL BORON FROM BORON OXIDE BY MECHANOCHEMICAL METHOD ABSTRACTIn this study, synthesis and characterization of elemental boron which is one of the high valuable boron-end products were carried out by mechanochemical method starting from anhydrous boron oxide. Metalic magnesium powder was used in the reducing process. Boron oxide and magnesium which has different grinding times and different ratios of reactant was ground at inert atmosphere and room temperature. The milled powder was applied to the heat treatment in an oven. Characterization of the synthesized powder was carried out by XRay Diffractometer (XRD), Scanning Electron Microscopy (SEM), Energy Dispersive Spectrometry (EDS) and titration method. According to the XRD analysis, elemental boron phase was observed in an obtained product as a result of 1/3.3 powder to ball weight ratio milled 600 minutes. After the leaching purification process the results of XRD, EDS and titration analysis have shown that impurities was removed at significant rate. Purity of elemental boron has been determined as 95% by titration method.

show abstract

How to Design Hydrogen Storage Materials? Fundamentals, Synthesis, and Storage Tanks

Lai

Sun

Wang

et al. 2019

Advanced Sustainable Systems

122

View full text Add to dashboard Cite

show abstract

Processing of NaBH4 from NaBO2 with MgH2 by ball milling and usage as hydrogen carrier

Cited by 53 publications

References 11 publications

A Recycling Hydrogen Supply System of NaBH4 Based on a Facile Regeneration Process: A Review

A Recycling Hydrogen Supply System of NaBH4 Based on a Facile Regeneration Process: A Review

Mekanoki̇myasal Yöntemle Bor Oksi̇tten Elementel Bor Sentezlenmesi̇ Ve Karakteri̇zasyonu

How to Design Hydrogen Storage Materials? Fundamentals, Synthesis, and Storage Tanks

Contact Info

Product

Resources

About