Controlled capsule type sodium borohydride hydrogen generating agent

Abstract

The invention discloses a controllable capsule borohydride sodium hydrogen propellant. The controllable capsule borohydride sodium hydrogen propellant is the borohydride sodium or 100 weight borohydride sodium and the stabilizer, activator, or the mixture of the stabilizer and the activator with the weight proportion ranging from 1 to 100 are wrapped in the capsule; the material of the capsule is the aluminum foil, glutin, glycerin, amylases, copolymerization polypeptides, maize papers, cellulose acetate, aromatic polyamide, polysulfone, polyethylene, and polypropylene. The catalyst is the transition metal salt and the hydrate, the transition metal powder, transition metal / carrier, and the framework-typed catalyst formed by the fore-driving body alloy. The stabilizer is the sodium hydroxide. The invention has the beneficial effects of 1) improving the safety and convenience of the series of links such as the transportation, storage and the application, etc. of the sodium borohydride; 2) improving the controllability of the hydrolyze reaction and the invariableness of the reaction speed; 3) improving the highest reaction consistence of the sodium borohydride and reaching high hydrogen production density.

Description

technical field [0001] The invention relates to a controllable capsule type sodium borohydride hydrogen generating agent. Background technique [0002] Hydrogen energy is a clean secondary energy source. Establishing a renewable energy system with hydrogen as a carrier can effectively solve the current energy shortage and environmental pollution, two serious problems that restrict economic development. The leap in performance of fuel cells in recent years has also provided broad prospects for the use of hydrogen energy. But there is still no way to store hydrogen economically, efficiently, and safely, thus hindering the commercialization of fuel cells to a large extent. [0003] In this context, borohydride (M(BH 4 )n, M=Li, Na, K, Mg, Al etc.) especially sodium borohydride because of its hydrogen content up to 10.6wt%, under the action of catalyst, it can release all hydrogen at normal temperature and attract attention: [0004] NaBH 4 +2H 2 O = NaBO 2 +4H 2 [000...

AI Technical Summary

Problems solved by technology

However, the use of high-concentration sodium borohydride will lead to solid products in the reaction process, which will affect the fluidity of the reaction solution and the contact between the reactant and the catalyst, and hinder the continuation of the reaction.