Mg含量对氢化燃烧合成MgH_2水解制氢性能的影响  

Effect of Mg Additive on Hydrogen Generation via Hydrolysis of MgH_2 Prepared by Hydriding Combustion Synthesis

作　　者：孙陈诚[1] 王金[1] 刘虎[1] 朱云峰[1] 李李泉[1] 

机构地区：[1]南京工业大学,江苏南京210009

出　　处：《稀有金属材料与工程》2015年第4期945-949,共5页Rare Metal Materials and Engineering

基　　金：国家自然科学基金资助项目(51171079);江苏省青蓝工程和高校自然科学研究资助项目(13KJA430003);江苏高校优势学科建设工程资助项目

摘　　要：系统研究了Mg的添加量及球磨时间对氢化燃烧合成(Hydriding Combustion Synthesis,HCS)Mg H2在Mg Cl2溶液中水解释氢动力学性能的影响。Mg H2-60%Mg(质量分数,下同)经3 h球磨后在5 min内释氢量为993 m L/g(转化率达80%),经15 min可完全水解,副产物为单一的Mg(OH)2。研究表明:镁的添加在降低制氢成本的同时,一方面可提高释氢动力学性能,另一方面也便于副产物回收再生。The effects of Mg addition content and ball milling time on the hydrolysis kinetics of MgH2 prepared by hydriding combustion synthesis （HCS） in MgC12 solution were investigated. When MgHE-60%Mg was milled for 3 h, hydrogen yield reached to 993 mL/g within 5 min （80% in conversion） and the hydrolysis was completed within 15 rain with a single phase of Mg（OH）2 as the byproduct. Results indicate that the HCSed MgH2 with addition of Mg can serve as a low-cost on-board hydrogen source with some advantages such as excellent kinetics of hydrolysis and easy recycle of byproduct.

关 键 词：镁 镁基氢化物 球磨 水解制氢 

分 类 号：TQ116.2[化学工程—无机化工]