The Influence of the Specific Surface Area of the Carbon Support on the Activity of Ruthenium Catalysts for the Ammonia-Decomposition Reaction
The Influence of the Specific Surface Area of the Carbon Support on the Activity of Ruthenium Catalysts for the Ammonia-Decomposition Reaction
复制标题
DOI：
10.1134/s0023158418020015
复制
发表时间：
2018-03-01
影响因子：
1.1
通讯作者：
Shlyapin, D. A.
中科院分区：
文献类型：
--
作者：
Borisov, V. A.;Iost, K. N.;Shlyapin, D. A.
使用通过密度分级起始碳复合Sib单元的方法来获得具有不同比表面积值的Sib单元的三个样品：Sib 10在439 m2/g，Sib 13在389 m2/g，和Sib 17在256 m2/g。使用这两种方法，即X射线衍射分析和组合（拉曼）散射光谱的Sib单元的研究，没有发现显着差异（晶格参数和I（D）/I（G）比）。将分级的载体用于获得用于氨分解反应（0.1 MPa，400 A ℃）的含Ru催化剂。对于相同组成的催化剂（4.0%Ru和13.6%Cs），每1 m（2）载体比表面积a计算的比催化活性的依赖性具有极端形式。作者将这与两个因素联系起来：阻塞的载体孔含有活性组分，以及钌与催化剂的促进剂（Cs）相互作用特征的变化。
A method for fractionation of the starting carbon composite Sibunit by density was used to obtain three samples of Sibunit with different values of the specific surface area: Sib10 at 439 m(2)/g, Sib13 at 389 m(2)/g, and Sib17 at 256 m(2)/g. Investigation of Sibunits using both methods, that is, X-ray diffraction analysis and combination (Raman) scattering spectroscopy, did not reveal significant differences (the parameters of the crystal lattice and the I (D)/I (G) ratio). The fractionated supports were used to obtain Ru-containing catalysts for ammonia decomposition reaction (0.1 MPa, 400A degrees C). The dependence of the specific catalytic activity calculated per 1 m(2) of the support specific surface a for catalysts of the same composition (4.0% Ru and 13.6% Cs) has an extreme form. The authors connect this with two factors: the blocking support pores contain an active component and a change in features of ruthenium interactions with the promoter (Cs) of the catalyst.