SELECTIVE HYDROGEN-CYANIDE SYNTHESIS FROM CFC12 (CCL2F2) AND AMMONIA OVER METAL-CATALYSTS SUPPORTED ON LAF3 AND ACTIVATED-CHARCOAL

被引：16

作者：

TAKITA, Y

IMAMURA, T

MIZUHARA, Y

ABE, Y

ISHIHARA, T

机构：

[1] Department of Environmental Chemistry and Engineering, Faculty of Engineering, Oita University, Oita

来源：

APPLIED CATALYSIS B-ENVIRONMENTAL | 1992年 / 1卷 / 02期

关键词：

CFC DECOMPOSITION; GOLD LANTHANUM TRIFLUORIDE; HYDROGEN CYANIDE SYNTHESIS; LANTHANUM TRIFLUORIDE; PALLADIUM CARBON; PLATINUM LANTHANUM TRIFLUORIDE; RHODIUM CARBON;

D O I：

10.1016/0926-3373(92)80034-W

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The applicability of supports such as LaF3, activated charcoal and Cr2O3 to the new reaction, CCl2F2 + 5/3NH3 --> HCN + 2HCl + 2HF + 1/3N2 was examined and it was found that TiO2 itself reacted with CFC12 to give carbon monoxide and carbon dioxide even at 673 K in addition to hydrogen cyanide formation. LaF3 did not react with CFC (chlorofluorocarbon) even at 823 K so that it could be considered suitable for use as a catalyst support. Au (1 wt.-%)/LaF3 and Pt(1 wt.-%)/LaF3 were effective for hydrogen cyanide formation and hydrogen cyanide selectivity reached 77-78% at 823 K. Activated charcoal was also suitable for use as a catalyst support and hydrogen cyanide was formed selectively (72-84%) over Rh(1 wt.-%)/AC and Pd(1 wt.-%)/AlF3/AC catalysts at 823 K.

引用

页码：79 / 87

页数：9

共 12 条

[1]

Molina M.J., 1974, NATURE, V249, P811

[2] DECOMPOSITION OF CHLOROFLUOROCARBONS BY THE REACTION WITH WATER-VAPOR CATALYZED BY IRON-OXIDE SUPPORTED ON ACTIVATED CARBON [J].