Synthesis of a Highly Active and Stable Nickel‐Embedded Alumina Catalyst for Methane Dry Reforming: On the Confinement Effects of Alumina Shells for Nickel Nanoparticles

摘要

Abstract > A 12?% Ni@Al <sub>2</sub> O <sub>3</sub> catalyst was synthesized by using an inverse microemulsion technique and evaluated for the dry reforming of methane (DRM). We used TEM to reveal that the core–shell structure was formed successfully in the 12?% Ni@Al <sub>2</sub> O <sub>3</sub> catalyst, in which the Ni nanoparticle cores with an average grain size around 10?nm are encapsulated by mesoporous Al <sub>2</sub> O <sub>3</sub> shells. In comparison with a 12?% Ni/Al <sub>2</sub> O <sub>3</sub> catalyst prepared by an impregnation method, much smaller Ni grain sizes and higher metallic Ni active surface areas can be achieved in the core–shell catalyst, which was evidenced by using TEM and H <sub>2</sub> adsorption–desorption analysis. In addition, a larger amount of active oxygen species was formed on the surface of 12?% Ni@Al <sub>2</sub> O <sub>3</sub> than on 12?% Ni/Al <sub>2</sub> O <sub>3</sub> . Importantly, the formation of the core–shell structure in 12?% Ni@Al <sub>2</sub> O <sub>3</sub> can effectively impede the migration of the Ni active species at elevated temperatures, which prevents agglomeration. Consequently, the 12?% Ni@Al <sub>2</sub> O <sub>3</sub> core–shell catalyst shows a remarkable activity and stability and a potent coke resistance during a 50?h durability evaluation at 800?°C for DRM. It is believed that the core–shell structure is the major factor that accounts for the superior DRM performance over that of the 12?% Ni@Al <sub>2</sub> O <sub>3</sub> catalyst, which might open a new way for the design and development of improved catalysts for DRM for hydrogen production. </abstract> </span> <span class="z_kbtn z_kbtnclass hoverxs" style="display: none;">展开▼</span> </div> <div class="translation abstracttxt"> <span class="zhankaihshouqi fivelineshidden" id="abstract"> <span>机译：</span><Abstract Type =“Main”XML：Lang =“en”> <标题类型=“main”>抽象</ title> > 一个12？％ni @ al <sub> 2 </ sub> O. <sub> 3 </ sub> 通过使用逆微乳液技术合成催化剂，并评价甲烷（DRM）的干燥重整。我们使用TEM来揭示核心壳结构在12？％NI @ Al中成功形成 <sub> 2 </ sub> O. <sub> 3 </ sub> 催化剂，其中具有平均晶粒大小约为10μm的Ni纳米粒子芯被介孔Al包封 <sub> 2 </ sub> O. <sub> 3 </ sub> 贝壳。与12？％Ni / Al相比 <sub> 2 </ sub> O. <sub> 3 </ sub> 通过浸渍方法制备的催化剂，可以在核 - 壳催化剂中实现更小的Ni晶粒尺寸和更高的金属Ni活性表面积，这通过TEM和H证明了这一点 <sub> 2 </ sub> 吸附解吸分析。此外，在12℃的表面上形成较大量的活性氧物质 <sub> 2 </ sub> O. <sub> 3 </ sub> 比12？％ni / al <sub> 2 </ sub> O. <sub> 3 </ sub> 。重要的是，在12？％Ni @ Al中形成核心壳结构 <sub> 2 </ sub> O. <sub> 3 </ sub> 可以有效地妨碍Ni活性物种在升高的温度下迁移，这可以防止聚集。因此，12？％ni @ al <sub> 2 </ sub> O. <sub> 3 </ sub> 核 - 壳催化剂在50Ω℃的50Ω耐久性评估期间显示出显着的活性和稳定性，并且在50Ω℃下进行DRM。据信，核心壳结构是占12？％Ni @ al的优越DRM性能的主要因素 <sub> 2 </ sub> O. <sub> 3 </ sub> 催化剂，这可能为氢气生产的DRM改进的改进催化剂的设计和开发的新方法。 </ p> </摘要> </span> <span class="z_kbtn z_kbtnclass hoverxs" style="display: none;">展开▼</span> </div> </div> <div class="record"> <h2 class="all_title" id="enpatent33" >著录项</h2> <ul> <li> <span class="lefttit">来源</span> <div style="width: 86%;vertical-align: text-top;display: inline-block;"> <a href='/journal-foreign-16041/'>《ChemCatChem》</a> <b style="margin: 0 2px;">|</b><span>2017年第18期</span><b style="margin: 0 2px;">|</b><span>共9页</span> </div> </li> <li> <div class="author"> <span class="lefttit">作者</span> <p id="fAuthorthree" class="threelineshidden zhankaihshouqi"> </p> <span class="z_kbtnclass z_kbtnclassall hoverxs" id="zkzz" style="display: none;">展开▼</span> </div> </li> <li> <div style="display: flex;"> <span class="lefttit">作者单位</span> <div style="position: relative;margin-left: 3px;max-width: 639px;"> <div class="threelineshidden zhankaihshouqi" id="fOrgthree"> </div> <span class="z_kbtnclass z_kbtnclassall hoverxs" id="zhdw" style="display: none;">展开▼</span> </div> </div> </li> <li > <span class="lefttit">收录信息</span> <span style="width: 86%;vertical-align: text-top;display: inline-block;"></span> </li> <li> <span class="lefttit">原文格式</span> <span>PDF</span> </li> <li> <span class="lefttit">正文语种</span> <span>eng</span> </li> <li> <span class="lefttit">中图分类</span> <span><a href="https://www.zhangqiaokeyan.com/clc/1186.html" title="物理化学（理论化学）、化学物理学">物理化学（理论化学）、化学物理学;</a></span> </li> <li class="antistop"> <span class="lefttit">关键词</span> <p style="width: 86%;vertical-align: text-top;"> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=aluminum&option=203" rel="nofollow">aluminum;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=heterogeneous catalysis&option=203" rel="nofollow">heterogeneous catalysis;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=mesoporous materials&option=203" rel="nofollow">mesoporous materials;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=nanoparticles&option=203" rel="nofollow">nanoparticles;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=nickel&option=203" rel="nofollow">nickel;</a> </p> <div class="translation"> 机译：铝;异质催化;中孔材料;纳米粒子;镍; 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</li> <li> <div> <b>6. </b><a class="enjiyixqcontent" href="/academic-conference-cn_meeting-33794_thesis/02022943318.html">火焰原子吸收分光光度法分析高纯氧化铝和氢氧化铝中痕量镍</a> <b>[C]</b> <span> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=苏献瑞&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor"> . 苏献瑞</a> <span> <a href="/conference-cn-33794/" target="_blank" rel="nofollow" class="tuijian_authcolor"> . 全国第六届重有色金属分析(有色)第四届化学分析学术会议 </a> <span> <span> . 1998</span> </span> </div> </li> <li> <div> <b>7. </b><a class="enjiyixqcontent" href="/academic-degree-domestic_mphd_thesis/020314713514.html">镧、钡改性镍-氧化铝催化剂用于甲烷部分氧化的研究</a> <b>[A] </b> <span> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=段华超&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor"> . 段华超</a> <span> . 2004</span> </span> </div> </li> </ul> <ul style="display: none;"> <li> <div> <b>1. </b><a class="enjiyixqcontent" href="/patent-detail/06120113309119.html">一种甲烷干重整镍硅催化剂及其制备方法和甲烷高效干重整制合成气的方法</a> <b>[P]</b> . <span> 中国专利： CN113332985A </span> <span> . 2021-09-03</span> </div> </li> <li> <div> <b>2. </b><a class="enjiyixqcontent" href="/patent-detail/061204576710.html">甲烷干重整反应、用于甲烷干重整反应的含镍和铈的核壳结构的催化剂及其制备</a> <b>[P]</b> . <span> 中国专利： CN107921427B </span> <span> . 2021.08.03</span> </div> </li> <li> <div> <b>3. </b><a class="enjiyixqcontent" href="/patent-detail/06130424453933.html">Highly stable nickel-magnesia-alumina reforming catalyst for internal reforming of molten carbonate fuel cell with strong poisoning resistance of potassium hydroxide, and preparation method thereof</a> <b>[P]</b> . <span> 外国专利：  KR101048163B1 </span> <span> . 2011-07-08</span> </div> <p class="zwjiyix translation" style="max-width: initial;height: auto;word-break: break-all;white-space: initial;text-overflow: initial;overflow: initial;"> <span>机译：用于氢氧化碳中毒性强的熔融碳酸盐燃料电池内部重整的高稳定性镍镁铝重整催化剂及其制备方法 </span> </p> </li> <li> <div> <b>4. </b><a class="enjiyixqcontent" href="/patent-detail/06130427099025.html">Highly stable nickel-alumina reforming catalyst for internal reforming of molten carbonate fuel cell with strong poisoning resistance of potassium hydroxide and its manufacturing method</a> <b>[P]</b> . <span> 外国专利：  KR100930206B1 </span> <span> . 2009-12-07</span> </div> <p class="zwjiyix translation" style="max-width: initial;height: auto;word-break: break-all;white-space: initial;text-overflow: initial;overflow: initial;"> <span>机译：用于氢氧化碳中毒性强的熔融碳酸盐燃料电池内部重整的高稳定性镍铝重整催化剂及其制造方法 </span> </p> </li> <li> <div> <b>5. </b><a class="enjiyixqcontent" href="/patent-detail/06130448118979.html">A stable and active nickel catalyst is used for the carbon dioxide reforming of methane to the synthesis gas</a> <b>[P]</b> . <span> 外国专利：  DE69424540T2 </span> <span> . 2001-02-08</span> </div> <p class="zwjiyix translation" style="max-width: initial;height: auto;word-break: break-all;white-space: initial;text-overflow: initial;overflow: initial;"> <span>机译：稳定和活性的镍催化剂用于将甲烷二氧化碳重整为合成气 </span> </p> </li> </ul> </div> </div> </div> <div class="theme cardcommon" style="overflow: auto;display:none"> <h3 class="all_title" id="enpatent55">相关主题</h3> <ul id="subject"> </ul> </div> </div> </div> </div> <div class="right rightcon"> <div class="details_img cardcommon clearfix" style="margin-bottom: 10px;display:none;" > </div> </div> </div> <div id="thesis_get_original1" class="downloadBth" style="bottom: 19px;z-index: 999;" onclick="ywcd('0704022058375','4',7,2,1,'',this,24)" class="delivery" prompt="010401" title="通过人工服务将文献原文发送至邮箱" >获取原文</div> <div class="journalsub-pop-up" style="display: none"> <div class="journal-sub"> <h2>期刊订阅</h2> <img src="https://cdn.zhangqiaokeyan.com/img/loginclose.png" alt="关闭" onclick="$('.journalsub-pop-up').hide()"> <p class="pardon">抱歉，该期刊暂不可订阅，敬请期待！</p> <p class="current">目前支持订阅全部北京大学中文核心（2020）期刊目录。</p> <div style="display: flex;margin-top: 69px;justify-content: space-between;"> 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