In 2.2% Rh/纬-Al2O3, the vast majority of the Rh, >95%, is ESR inactive. The rest, a small proportion, can be made ESR-visible by room temperature sorption of water or other polar molecules suggesting that the interaction of these ESR-active ions with the support is weak. An ...
Rh因子所致的溶血反应是因为(1分) A、 Rh阴性初次输入Rh阳性血液 B、 Rh阳性输入Rh阴性血液 C、 O型者阴性输入Rh阳性血液 D、 Rh阴性再次输入Rh阳性血液 E、 AB型者阳性输入Rh阴性血液 免费查看参考答案及解析 题目: 机械式温湿度计的湿度示值误差在(40%RH～70%RH,20℃)应不超过() A、 ±2%RH ...
通过实践，宝钢实现了以不烧镁尖晶石砖为主体，结合部分刚玉-尖晶石浇注料整体浇注浸渍管，实现了对RH精炼炉的浸渍管、环流管、下部槽和中上部槽等部位整槽镁铬质耐火材料的替代。工业试用表明：不烧镁尖晶石砖在RH炉各部位使用寿命与镁铬砖相当，生产成本下降，宝钢所有精炼炉都采用不烧镁尖晶石砖取代镁铬砖，实...
The catalysts Rh/Al 2O 3 and Rh/TiO 2 for hydrogen production from NaBH 4 were prepared by deposition technique from RhCl 3 reduced by NaBH 4 and were studied by XPS and TEM. It was found that the RhCl 3/Al 2O 3 system is more stable comparing to RhCl 3/TiO 2 which starts to ...
Huanfeng Jiao1, Xiaoliang Zhao1, Chunxiao Lv1,Yijun Wang1, Dongjiang Yang1,2, Zhenhuan Li3 & Xiangdong Yao1,2 One-dimensional γ-Al2O3 nanofibers were modified with Nb2O5 to be used as an efficient heterogeneous catalyst to catalyze biomass into 5-hydroxymethylfurfural (5-...
型号 3-5/4-6mm 产品描述: 活性氧化铝球外观为白色粒球,微孔分布均匀,水吸附能力强,机械强度高,比表面积大,亲水性能好,体吸附干燥效果好,产品。活性氧化铝产品AL2O3含量≥93%,产品执行标准HG/T3927-2007,符合行业产品生产标准,可为客户提供,周期1年,确保为原生球。 化学品中文名称: 活性氧化铝 化学品英文...
据报道，单原子催化的研究中，涉及到的单原子的种类已经有30多种，常见的主要有：Pt, Pd, Au, Ir, Ag, Rh等贵金属和Fe, Co, Ni，Cu等非贵金属。常用的载体主要有金属及金属氧化物，如Fe2O3、TiO2和Al2O3，碳基载体有碳纳米球、纳米碳纤维、石墨烯、金属有机框架衍生碳、氮化碳等。经过十几年的发展...
The estimated average oxygen coordination number for Al was 4.7. The fractions of Al[5] and Al[6] were considerably larger than atShsroRasn2eOdo3bB-Asae)lr2Ovgel3ads(sRiensi3so0.tahWerarhriaelleueamArlti[nh5]aitaoenndgolaArsslY[e6)s] ,;hRAa2vlOet3yb-pAeiecl2naOllo3y-bSfsioeOrrmv2,es...
[判断题] 以Na3AlF6-Al2O3的熔体为主的电解质缺点之一是其导电性能不好,导致了铝电解生产电能消耗大 A、对 B、错 免费查看参考答案及解析 题目: [判断题] 大多添加剂都会在一定程度上减小Al2O3在电解质中的溶解度。 A、对 B、错 免费查看参考答案及解析 题目: [判断题] 在电解质熔体中,随Al2O3...
为解决这一问题,太原理工大学李忠和付廷俊等在ZnZrOx-ZSM-5体系中引入Al2O3,设计了ZnZrOx(ZZO)催化CO2加氢、Al2O3催化甲醇脱水、Z5分子筛催化二甲醚与苯烷基化的三元复合催化体系,实现了苯与CO2/H2的高效烷基化反应。 实验结果表明,最优的ZZO-0.3Al2O3/Z5催化剂的甲苯和二甲苯混合选择性高达97%,苯转化率...