The paper provides a summary of safety characteristics of hydrogen and hydrogen fuel gases. The investigations focus on water electrolysis, the feeding of hydrogen into the natural gas grid and the use of hydrogen for the fermentation process in biogas plants. The safety characteristics of hydro...

Hydrogen is one of promising energy sources with virtually non-polluting. In this paper, the hydrogenation mechanism and hydrogen storage weight percentage of new forms of CNCs, BNNCs and SiCNCs with an apex angle of 112.9° are investigated for first time using density functional theory (DFT) a...

Effects of internal hydrogen and surface-absorbed hydrogen on hydrogen embrittlement (HE) of X80 pipeline steel were investigated by using different strain rate tensile test, annealing and hydrogen permeation tests. HE of X80 pipeline steel is affected by internal hydrogen and surface-absorbed h...

The current study investigates hydrogen flaking in large forgings. Two industrially forged pressure vessel materials, exhibiting different segregation behavior are compared for this purpose. Electrochemical hydrogen charging is used to simulate the flakes, present in real-life applications, on a...

In refinery, hydrogen separators affect the utility consumption of the hydrogen network. A novel method is proposed to optimize the hydrogen separators and integrate the hydrogen network simultaneously. The model of separator is built with the Soave-Redlich-Kwong (SRK) equation of state employed...

Hydrogen storage technology is essentially necessary to promote renewable energy. Many kinds of hydrogen storage materials, which are hydrogen storage alloys, inorganic chemical hydrides, carbon materials and liquid hydrides have been studied. In those materials, ammonia (NH3) is easily liquefie...

Safe, reliable, and economic hydrogen storage is a bottleneck for large-scale hydrogen utilization. In this paper, hydrogen storage methods based on the ambient temperature compressed gaseous hydrogen (CGH2), liquid hydrogen (LH2) and cryo-compressed hydrogen (CcH2) are analyzed. There exists th...

Hydrogen-microvoid interactions were studied via unit cell analyses with different hydrogen concentrations. The absolute failure strain decreases with hydrogen concentration, but the failure loci were found to follow the same trend dependent only on stress triaxiality, in other words, the effect...

Complexation of boric acid with vitamins B1 (thiamine) and B6 (pyridoxine) was investigated. The products were isolated from aqueous solutions and characterized by elemental analysis, FT-IR, 13C MAS NMR and thermal methods. The results of chemical and spectral analyses suggested that the reactio...

Hexagonal boron nitride (h-BN) is a well-known ceramic that has wide application areas ranging from electronics to metallurgy. However, highly ordered h-BN is conventionally synthesized at high temperatures above 1800 °C. In this work, we investigated the formation of BN from boric acid (H3BO3)...

The new metal-organic framework materials based on boric acid reported herein. Sodium and boron containing metal-organic frameworks were synthesized by one-pot self-assembly reaction in the presence of trimesic acid and terephthalic acid in water/ethanol solution. Boric acid is a relatively chea...

Three boric acid mediated metal organic frameworks were synthesized by solution method with using succinic acid, fumaric acid and acetylene dicarboxylic acid as a ligand source and sodium as a metal source. The complexes were characterized by FT-IR, powder XRD, elemental analyses and single crys...

Adiabatic foam has been successfully prepared through sintering sodium silicate which is modified by boric acid. The effect of the sintering temperature, boric acid content and modulus of sodium silicate on the thermal conductivity, density, compression strength and microstructure of the adiabat...

BackgroundEpidural fibrosis is a major problem after spine surgery, with some patients having recurrent symptoms secondary to excessive formation of scar tissue resulting in neurologic compression. We used a rat laminectomy model to determine if topical application of boric acid could be helpful...

A systematic investigation was conducted on the extraction of boric acid from salt lake brine using 2-butyl-1-n-octanol dissolved in sulfonated kerosene. The extraction parameters, including the concentration of extractant, phase ratio and pH value of the brine, were optimized. The salting-out e...

The synthesis and pharmacological activity of 5-arylidene-2-imino-4-thiazolidinones (3a–8a) are described. All derivatives exhibited significant activity levels in models of acute inflammation such as carrageenan-induced paw and pleurisy edema in rats. In particular, 5-(3-methoxyphenylidene)-2-...

A new series of 3-(1-(3,4-dimethoxyphenethyl)-4,5-diphenyl-1H-imidazol-2-yl)-1H-indole derivatives (5a-5j) are conveniently synthesized and characterized by IR, 1H NMR and 13C NMR spectral techniques. The compound 5f was also confirmed by single crystal XRD analysis and optimized bond parameters...

Thirty new 1,2-dihydropyridine derivatives of the general formula 4-alkyl (aryl)-6-aryl-3-cyano-2(1H)-pyridinones (1–15) and 4-alkyl (aryl)-6-aryl-3-cyano-2(1H)-iminopyridines (16–30) were synthesized using one-pot multicomponent reactions of the properly substituted acetophenone, appropriate ...

A series of 4-amino-5-cinnamoylthiazoles 3a-p were designed and synthesized as chalcone-like anticancer agents. The synthesized derivatives 3a-p were evaluated for their in vitro antiproliferative activities against three different human cancer cell lines including MCF-7, HepG2 and SW480. Most o...

A new stepwise iterative methodology using living anionic polymers with a 1,1-diphenylethylene (DPE) derivative substituted with a protected formyl functionality bearing a 1,3-dioxolane (DOL) function, 2, was developed in order to synthesize well-defined μ-star polymers composed of poly(methacr...