氨硼烷水解制氫催化劑載體的研究進展
發(fā)布時間:2018-04-30 23:01
本文選題:氨硼烷 + 制氫 ; 參考:《材料導(dǎo)報》2017年17期
【摘要】:氫由于具有高效率和高功率密度而被認為是一種出色的清潔能源;瘜W儲氫材料要求具有高的氫儲存量。氨硼烷具有高氫含量(19.6%),且在普通貯存條件下穩(wěn)定,被認為是有吸引力的儲氫材料之一。由于氨硼烷在常溫下不易放氫,故放氫催化劑成為氨硼烷放氫研究的核心技術(shù)和主要方向。金屬催化劑可以顯著提高水解放氫速度,是影響氨硼烷水解放氫的關(guān)鍵因素,但是金屬顆粒催化劑一般都存在顆粒粒徑生長過快、易團聚等缺點。為了解決這一問題,研究者選擇不同的載體來分散催化劑,使催化劑金屬分散在載體表面,防止團聚和過快增長,從而暴露更多活性位點,使催化氨硼烷放氫速率更快。文章將針對不同催化劑載體對氨硼烷水解的催化效果進行闡述。
[Abstract]:Hydrogen is considered to be an excellent clean energy because of its high efficiency and high power density. Chemical hydrogen storage materials require high hydrogen storage. Ammonia borane has high hydrogen content (19.6%) and is stable under ordinary storage conditions. It is considered as one of the attractive hydrogen storage materials. The catalyst has become the core technology and the main direction of the research on the dehydrogenation of ammonia borane. Metal catalysts can significantly increase the rate of hydrolysis and discharge hydrogen. It is the key factor affecting the hydrolysis and discharge of the borane. However, the particle size of the metal particle catalyst usually exists too fast and is easy to reunite. In order to solve this problem, the researchers choose different kinds. The carrier is used to disperse the catalyst to disperse the catalyst metal on the surface of the carrier to prevent the reunion and excessive growth, thus exposing more active sites and making the catalytic activity of the dehydrogenation of ammonia borane faster. The catalytic effect of different catalyst carriers on the hydrolysis of ammonia borane is described in this paper.
【作者單位】: 河北工業(yè)大學材料科學與工程學院;
【基金】:國家自然科學基金(21603052;51301057)
【分類號】:O643.36;TQ116.2
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