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Hydrodeoxygenation of Phenol over Zirconia‐Supported Catalysts: The Effect of Metal Type on Reaction Mechanism and Catalyst Deactivation

机译:氧锆支持催化剂的苯酚加氢脱氧:金属类型对反应机理和催化剂失活的影响

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摘要

Abstract > This work aims at investigating the effect of the type of metal (Pt, Pd, Rh, Ru, Cu, Ni, Co) on the performance of ZrO <sub>2</sub> ‐supported catalysts for the hydrodeoxygenation of phenol in the gas phase at 573?K and 1?atm. Two different reaction pathways take place depending on the type of the metal. For Pt/ZrO <sub>2</sub> and Pd/ZrO <sub>2</sub> catalysts, phenol is mainly tautomerized, followed by hydrogenation of the C=C bond of the tautomer intermediate formed, producing cyclohexanone and cyclohexanol. By contrast, the direct dehydroxylation of phenol followed by hydrogenolysis might also occur over more oxophilic metals such as Rh, Ru, Co, and Ni. In addition to the metals, the oxophilic sites of this support represented by Zr 4+ and Zr 3+ cations near the perimeter of the metal particles also increased the selectivity to deoxygenated products. All catalysts were significantly deactivated mainly owing to the growth of metal particle size and the decrease in the density of oxophilic sites. </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> > 这项工作旨在研究金属类型(Pt,Pd,Rh,Ru,Cu,Ni,Co)对Zro的性能的影响 <sub> 2 </ sub> -Upporteded催化剂在气相中的苯酚的加氢脱氧,在573Ω·k和1℃。根据金属的类型进行两种不同的反应途径。对于Pt / Zro <sub> 2 </ sub> 和pd / zro <sub> 2 </ sub> 催化剂,苯酚主要是互变异的,然后氢化互变异构体中间体的C = C键,制备环己酮和环己醇。相比之下,苯酚的直接脱羟基化,其次是氢解也可能发生在更高抗乳化性金属上,例如Rh,Ru,Co和Ni。除了金属外,该支持的乳化位点由Zr表示 4 + </ sup> 和zr. 3 + </ sup> 金属颗粒周边附近的阳离子也增加了对脱氧产物的选择性。所有催化剂显着失活,主要是由于金属粒度的生长和乳化位点密度的降低。 </ 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14期</span><b style="margin: 0 2px;">|</b><span>共14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=dehydroxylation&option=203" rel="nofollow">dehydroxylation;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=hydrodeoxygenation&option=203" rel="nofollow">hydrodeoxygenation;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=phenol&option=203" rel="nofollow">phenol;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=tautomerization&option=203" rel="nofollow">tautomerization;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=ZrO 2&option=203" rel="nofollow">ZrO 2;</a> </p> <div class="translation"> 机译:脱羟基化;加氢脱氧;苯酚;互变异化;ZRO 2; </div> </li> </ul> </div> </div> <div class="literature cardcommon"> <div class="similarity "> <h3 class="all_title" id="enpatent66">相似文献</h3> <div class="similaritytab clearfix"> <ul> <li class="active" >外文文献</li> <li >中文文献</li> <li >专利</li> </ul> </div> <div class="similarity_details"> <ul > <li> <div> <b>1. </b><a class="enjiyixqcontent" href="/journal-foreign-detail/0704022058962.html">Hydrodeoxygenation of Phenol over Zirconia‐Supported Catalysts: The Effect of Metal Type on Reaction Mechanism and Catalyst Deactivation</a> <b>[J]</b> . <span> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor"> </a> <a href="/journal-foreign-16041/" target="_blank" rel="nofollow" class="tuijian_authcolor">ChemCatChem .</a> <span>2017</span><span>,第14期</span> </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:氧锆支持催化剂的苯酚加氢脱氧:金属类型对反应机理和催化剂失活的影响</span> </p> </li> <li> <div> <b>2. </b><a class="enjiyixqcontent" href="/journal-foreign-detail/0704028188247.html">Hydrodeoxygenation of phenol over zirconia supported Pd bimetallic catalysts. 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