文章信息/Info

Title:

Progress in Hydrolysis of Magnesium-Based Hydrogen Storage Materials for Hydrogen Production

文章編號:

1674-3962(2023)02-0105-09

作者:

吳加鰲; 鄒勇進(jìn); 孫立賢

（桂林電子科技大學(xué)材料科學(xué)與工程學(xué)院，廣西 桂林 541000）

Author(s):

WU Jiaao;  ZOU Yongjin;  SUN Lixian

（School of Materials Science and Engineering, Guilin University of Electronic Science and Technology, Guilin 541000, China)

關(guān)鍵詞:

鎂基儲氫材料; 水解; 制氫; Mg(OH)2; 氫能

Keywords:

magnesium-based hydrogen storage materials;  hydrolysis;  hydrogen production;  Mg(OH)2;  hydrogen energy

分類號:

TB34

DOI:

10.7502/j.issn.1674-3962.202207030

文獻(xiàn)標(biāo)志碼:

A

摘要:

化石能源的廣泛使用使得地球上出現(xiàn)了嚴(yán)重的溫室效應(yīng)和空氣污染，且化石能源的儲量也逐步下降，造成的能源危機(jī)日益嚴(yán)重。為了應(yīng)對這些挑戰(zhàn)，人們開始著力尋找清潔無污染的高效可再生能源。氫能因具有超高的燃燒熱及零排放的特點(diǎn)而被認(rèn)為是最理想的清潔能源。鎂基儲氫材料因具有高的質(zhì)量儲氫密度，且因鎂的地殼含量高、成本低等優(yōu)點(diǎn)而備受關(guān)注。鎂基儲氫材料水解可以產(chǎn)生高純度的氫，而且副產(chǎn)物對環(huán)境無污染，因此被認(rèn)為是最有應(yīng)用前景的制氫方式之一。純Mg和MgH2水解可以分別產(chǎn)生6.4%和3.4%（質(zhì)量分?jǐn)?shù)）的H2，但鎂基儲氫材料水解反應(yīng)產(chǎn)生難溶于水的Mg(OH)2，導(dǎo)致其反應(yīng)動力學(xué)緩慢。近年來，通過將金屬、金屬氫化物與鎂基儲氫材料進(jìn)行復(fù)合或者在水解反應(yīng)時(shí)添加酸和無機(jī)鹽等手段有效提高了氫產(chǎn)率和反應(yīng)動力學(xué)性能。綜述了鎂基儲氫材料水解制氫的最新研究進(jìn)展，并對其未來的發(fā)展提出了展望。

Abstract:

The widespread use of fossil energy has caused serious greenhouse effect and air pollution on the earth. Moreover, the reserves of fossil energy have gradually declined, resulting in an increasingly serious energy crisis. In response to these crises, people have begun to look for the clean, pollution-free and efficient renewable energy. Hydrogen energy is considered to be the most ideal clean energy owing to its unique high combustion heat and zero emissions. Magnesium-based hydrogen storage materials have attracted much attention due to their high mass hydrogen storage density, and high crustal reserves and low cost of Mg, and the hydrolysis of magnesium-based hydrogen storage materials can produce hydrogen with a high theoretical capacity, and the produced by-products are environmental pollution-free. Therefore, it is considered as one of the most promising hydrogen production methods. In particular, the hydrolysis of pure Mg and MgH2 can yield 6.4wt% and 3.4wt% H2, respectively. However, the hydrolysis reaction of magnesium-based hydrogen storage materials produces Mg(OH)2, resulting in slow reaction kinetics. In recent years, the covering problem of Mg(OH)2 is investigated and solved by compounding metals, metal hydrides and magnesium-based hydrogen storage materials or adding acids and inorganic salts during the hydrolysis reaction. In this paper, the latest research progress of the hydrolysis of magnesium-based hydrogen storage materials is reviewed, and its future development is prospected.