NOVEL APPROACH FOR CONTROLLING CATALYTIC SITE FOR LOW-TEMPERATURE STEAM REFORMING

控制低温蒸汽重整催化位点的新方法

• 批准号: 05650786
• 负责人: IGARASHI Akira
• 金额: $ 1.47万
• 依托单位: KOGAKUIN UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1993
• 资助国家: 日本
• 起止时间: 1993 至 1994
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-05650786/
• 关键词: Hydrogen Production; Low-Temperature Steam Reforming; Support; High Surface Area Zirconia; Alkoxide; Sol-Gel Processing; 貴金属触媒; ジルコニア

In order to obtain a high surface area support for the low-temperature steam reforming, ZrO_2 and ZrO_2-Y_2O_3 were prepared by the hydrolytic decomposition of the corresponding isopropoxide dissolved in benzene. The hydrolysis was carried out at 80ﾟC using an excess amount of distillled water in flowing dry nitrogen. The precipotates thus obtained were dried at 100ﾟC followed by calcination at 500ﾟC in air or nitrogen for 1 h. The specific surface areas for both of the ZrO_2 and ZrO_2-Y_2O_3 increased with increasing amount of water added for hydrolysis, and the surface areas for ZrO_2-Y_2O_3 increased with increasing yttrium content. A ZrO_2 having a surface area of 130m^2/g was produced, and a stabilized tetragonal ZrO_2 with 15 mol% Y^<3+> having a surface area of 200m^2/g was produced. Furthermore, despite the difference in the ZrO_2 and ZrO_2-Y_2O_3 crystal structures, the lattice-strain of ZrO_2 has been unequivocally related to the surface area.

为了获得低温水蒸气重整反应的高比表面积载体，将相应的异丙醇溶于苯中，通过水解法制备了ZrO2和ZrO2-Y2O3。在80ﾟC的温度下，在流动的干氮气中使用过量的蒸馏水进行水解。在100ﾟC下干燥，然后在500ﾟC的空气或氮气中焙烧1h，得到的催化剂的比表面积随着水解剂加入量的增加而增加，而比表面积则随着Y含量的增加而增加。得到了比表面积为130m^2/g的稳定的四方氧化锆粉和比表面积为200m^2/g的稳定四方相氧化锆粉。此外，尽管ZrO_2和ZrO_2-Y_2O_3的晶体结构不同，但ZrO_2的晶格应变与比表面积有着明确的关系。

项目成果

Akira,IGARASHI: "Rreparation of High Surface Area ZrO_2 and ZrO_2-Y_2O_3 from the Alkoxide" J.Sol-Gel Sci.& Tech.(印刷中). (1994)

Akira, IGARASHI：“从醇盐中制备高表面积 ZrO_2 和 ZrO_2-Y_2O_3”J.Sol-Gel Sci.& Tech（出版中）。

IGARASHI,AKIRA: "THE ROLE OF ZIRCONIUM DIOXIDE IN THE ACTIVATION OF WATER AND AS THE CATALYTIC SITE FOR LOW-TEMPERATURE STEAM REFORMING OVER Rh/ZrO_2" STUD.SURF.SCI.CATAL.75. 2083-2086 (1993)

Igarashi, Akira：“二氧化锆在水活化中的作用以及作为 Rh/ZrO_2 低温蒸汽重整的催化位点”STUD.SURF.SCI.CATAL.75。

Akira,IGARASHI: "The Role of Zirconium Dioxide in the Activation of Water and as the Catalytic Site for Low-Temperature Steam Rforming over Rh/ZrO_2" Stud.Surf.Sci.& Catal.75. 2083-2086 (1993)

Akira，IGARASHI：“二氧化锆在水活化中的作用以及作为 Rh/ZrO_2 低温蒸汽重整的催化位点”Stud.Surf.Sci。

Akira IGARASHI: "Preparation of High Surface Area ZrO_2 and ZrO_2-Y_2O_3 from the Alkoxide" J.Sol-Gel Sci.Tech. 2. 413-415 (1994)

Akira IGARASHI：“从醇盐制备高表面积 ZrO_2 和 ZrO_2-Y_2O_3”J.Sol-Gel Sci.Tech。

IGARASHI,AKIRA: "PREPARATION OF HIGH SURFACE AREA ZrO_2 AND ZrO_2-Y_2O_3 FROM THE ALKOXIDE" J.SOL-GEL SCI.TECH.2-1-3. 413-415 (1994)

Igarashi, Akira：“从醇氧化物制备高表面积 ZrO_2 和 ZrO_2-Y_2O_3”J.SOL-GEL SCI.TECH.2-1-3。