Hydrogen release of NaBH_(4) below 60 ℃ with binary eutectic mixture of xylitol and erythritol additive  

作　　者：Yugang Shu Jiaguang Zheng Chengguo Yan Ao Xia Meiling Lv Zhenxuan Ma Zhendong Yao 

机构地区：[1]School of Energy and Power,Jiangsu University of Science and Technology,Zhenjiang 212003,China [2]Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education),Nankai University,Tianjin 300071,China [3]College of Materials and Chemistry,China Jiliang University,Hangzhou 310018,China

出　　处：《Chinese Journal of Chemical Engineering》2024年第7期225-234,共10页中国化学工程学报（英文版）

基　　金：support from the National Natural Science Foundation of China(52201255);the Natural Science Foundation of Jiangsu Province(BK20210884);the Innovation,and Entrepreneurship Program of Jiangsu Province(JSSCBS20211007).

摘　　要：NaBH_(4) was widely regarded as a low-cost hydrogen storage material due to its high-mass hydrogen capacity of approximately 10.8%(mass)and high volumetric hydrogen capacity of around 115 g·L^(–1).However,it exhibits strong stability and requires temperatures above 500℃ for hydrogen release in practical applications.In this study,two polyhydric alcohols,xylitol and erythritol(XE),were prepared as a binary eutectic sugar alcohol through a grinding-melting method.This binary eutectic sugar alcohol was used as a proton-hydrogen carrier to destabilize NaBH_(4).The 19NaBH_(4)-16XE composite material prepared by ball milling could start releasing hydrogen at 57.5℃,and the total hydrogen release can reach over 88.8%(4.45%(mass))of the theoretical capacity.When the 19NaBH_(4)-16XE composite was pressed into solid blocks,the volumetric hydrogen capacity of the block-shaped composite could reach 67.2 g·L^(–1).By controlling the temperature,the hydrogen desorption capacity of the NaBH_(4)-XE composite material was controllable,which has great potential for achieving solid-state hydrogen production from NaBH_(4).

关 键 词：HYDROGEN DESORPTION Binary mixture NaBH_(4) XYLITOL ERYTHRITOL 

分 类 号：TQ116.2[化学工程—无机化工]