摘要氢能的储存和运输问题是开发氢能的关键，大部分类似多孔材料在冷冻温度 下具有较高储氢能力，但是在常温下其储氢能力急剧下降，在常温下达不到美国 能源部提出的 2015 年储氢目标。目前已有的储氢材料在常温下即使压力很高达 到 10 MPa 储氢容量依然不尽人意，而近年来，在多孔纳米材料室温储氢性能的 改进上，氢溢流技术被证明是一种行之有效的方法。82609

介孔分子筛 SBA-15 利用水热合成法在酸性条件下合成，是一种规则六方相。 它的合成是近年来材料开发研究领域的又一重要化学技术，由于它具有高的热稳 定性，使其在催化、气体吸附分离和无机纳米材料等研究领域有很大的开发潜力。 但其本体在常温下的储氢性能不甚理想，仅 0。014 mmol∙g-1，介孔氧化硅材料表 面上的硅醇键具有一定的化学反应活性，本论文利用 Pt 对 SBA-15 进行修饰改 性，基于氢溢流原理提高其在常温下的储氢能力。主要取得以下研究成果：

利用固相研磨的方法将贵金属 Pt 负载到原粉 SBA-15 和脱除模板剂的 SBA-15 上，分别制得样品 PtAS 和 PtCS 并对其进行 XRD、BET、傅里叶红外光 谱、TEM、和吸附性能测试等表征分析发现 PtAS 中 Pt 纳米颗粒比 PtCS 的小， 常温下 PtAS 储氢容量远高于 PtCS，但两者较于 SBA-15 本体储氢容量都有大幅 度提升。

毕业论文关键词：低温储氢 储氢容量 常温储氢 氢溢流 SBA-15

Abstract The problem of hydrogen storage and transport is the key to the development of hydrogen energy。 The most similar porous materials under freezing temperature with high hydrogen storage capacity。 But at room temperature, the hydrogen storage capacity of a sharp decline at room temperature, which is less than proposed by the United States Department of Energy in 2015 hydrogen storage target。 At present existing hydrogen storage materials at room temperature even when under pressure up to 10 MPa hydrogen storage capacity is still unsatisfactory。 In recent years, hydrogen spillover was proved to be an effective method to improve the hydrogen storage properties in porous nano materials at room temperature。

SBA-15 is a mesoporous molecular sieve, by hydrothermal method under acidic conditions can be a synthesis of the six phase rule。 It’s synthesis is another important chemical technology in recent years。 Because of its high thermal stability, so that it has broad prospects to explore in the research fields of catalysis, adsorption and separation of gas, inorganic nanomaterials。 But its hydrogen storage performance at room temperature is not ideal, only 0。014 mmol∙g-1, silanol bonds on the surface of mesoporous silica materials with chemical reaction activity。 The paper with Pt on SBA-15 modified modified based on the principle of hydrogen spillover improve its hydrogen storage capacity at normal temperature。 The main results are as following:

Using solid grinding method of noble metal Pt load to the raw powder SBA-15 and removal of template SBA-15, respectively prepared sample PtAS and PtCS。 We found the nanoparticles of Pt in PtAS is smaller than the nanoparticles of Pt in PtCS and hydrogen storage capacity of PtAS at room temperature is much higher than ptCS, but both have improved significantly compared to SBA-15 bulk, by characterization analysis, i。e。 the XRD, BET, FT-IR, TEM, and the adsorption performance testing。

Keywords: Low temperature hydrogen storage Hydrogen storage capacity Hydrogen storage at normal temperature Hydrogen spillover SBA-15

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