EFFECT OF Ni ATOMIC PERCENT ON Ni DISPERSION AND CATALYTIC ACTIVITY IN PREPARATION OF CATALYSTS FROM La-Ni INTERMETALLIC COMPOUNDS

AYUMU YOKOYAMA; KAORU ONOE; TADASHI SHIROTSUKA

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EFFECT OF Ni ATOMIC PERCENT ON Ni DISPERSION AND CATALYTIC ACTIVITY IN PREPARATION OF CATALYSTS FROM La-Ni INTERMETALLIC COMPOUNDS

机译：镍原子百分率对La-Ni金属间化合物制备催化剂中Ni分散和催化活性的影响

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References(8) A previous study showed that oxidation of LaNi5 could produce catalysts with a relatively high Ni dispersion. This study focuses on the effect of Ni atomic percent α upon Ni dispersion δ and turnover frequency TF, using La-Ni compounds. It was found that the value of δ was higher in the order of LaNi5 >La2Ni7 >LaNi3 LaNi and that this order was related to oxidation rate. The value of TF, on the other hand, was higher in the reverse order, indicating that high oxidation rate causes severe defects on the surface of Ni crystallites.

机译：参考文献（8）先前的研究表明，LaNi5的氧化可产生具有较高Ni分散度的催化剂。这项研究集中在使用La-Ni化合物研究Ni原子百分数α对Ni分散δ和周转频率TF的影响。发现δ的值以LaNi5> La2Ni7> LaNi3> LaNi的顺序较高，并且该顺序与氧化速率有关。另一方面，TF的值相反地较高，表明高氧化速率导致Ni微晶表面上的严重缺陷。

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《Journal of Chemical Engineering of Japan》 |1986年第5期|共页
作者
AYUMU YOKOYAMA; KAORU ONOE; TADASHI SHIROTSUKA;
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中图分类冶金工业;
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EFFECT OF Ni ATOMIC PERCENT ON Ni DISPERSION AND CATALYTIC ACTIVITY IN PREPARATION OF CATALYSTS FROM La-Ni INTERMETALLIC COMPOUNDS

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