Heat-Induced Dry Hydrolysis of Sodium Borohydride/Oxalic Acid Dihydrate Composite for Hydrogen Production

Abstract

The generation of hydrogen, free of poisonous gas, combined with a lightweight proton-exchange membrane fuel cell can expand the use of hydrogen energy from conventional ground transportation vehicles and power stations to a variety of flying vehicles and wearable devices for civilian and military purposes. Herein, a hydrogen fuel composite composed of sodium borohydride (SB) and oxalic acid dihydrate (OA·2H2O) is introduced. The SB/OA·2H2O composite was easily decomposed to generate pure hydrogen at a trigger temperature of 50 °C, at which the water molecules of the OA·2H2O component were effectively liberated, inducing hydrolysis of the SB component to produce hydrogen gas. This dry hydrolysis-based hydrogen generation using the SB/OA·2H2O composite has the merits of rapidly generating hydrogen (i.e., 0.4 g of the composite can be fully decomposed within a minute at low temperatures), free of poisonous gas, in approximately 5 wt % yield (the theoretical maximum value).

One-Step Mechanochemical Synthesis of Bulk Sized Electroactive MoS2/Oxalic Acid Dihydrate Composite for Catalytic Nitrophenol Reductions

“…Signatures of TAP was also observed in the fourier-transform infrared spectroscopy (FTIR) analysis of the reaction mixture's residue (Figure S2 and S3). [54][55][56] The picrate ion reduction was observed to adhere to a pseudofirst-order kinetic model as revealed from the ln(A/Ao) vs time graph (where, A is the absorbance of picrate ion at any time and A0 is the initial absorbance of picrate ion, Figure 2a). Note that, the rate constants reported here are with respect to picrate ion and there exists linear relationships among concentration of PA, absorbance of PA, and absorbance of picrate ion (Figure S5).…”

Covalent Organic Framework-Derived Nitrogen-Doped Carbon-Supported Cobalt Oxide Nanoparticles for Synergistic Boosting H2 Evolution from NaBH4

“…− ion and one hydrogen atom are transferred to the adjacent metal atom through the support. 51,52 The water molecule reacts with a charged hydrogen atom to generate OH − and H 2 . The conjugated structure of the precursor COFs enhances the electrical conductivity of the derivative nitrogendoped carbon matrix.…”

“…The mechanism of the NaBH 4 hydrolysis hydrogen production includes two significant kinetic procedures. ,, The first step is the BH 4 – ions chemisorbed to the metal atoms. The second step is that the negative charge on the BH 4 – ion and one hydrogen atom are transferred to the adjacent metal atom through the support. , The water molecule reacts with a charged hydrogen atom to generate OH – and H 2 . The conjugated structure of the precursor COFs enhances the electrical conductivity of the derivative nitrogen-doped carbon matrix.…”

Antibacterial performance enhancement using hydrophobic deep eutectic solvents: COSMO-RS prediction, experimental validation, and synergistic action with antibiotics

“…Furthermore, for both bacteria, the intensity of the peak from 3500 to 3250 cm − 1 (-OH) [60] was severely reduced after treatment. The band at 3250 cm − 1 is associated with the stretching vibrations of the O-H bonds in alcohols and carboxylic acids [61].…”