Abstract
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.
| Original language | English |
|---|---|
| Pages (from-to) | 79-87 |
| Number of pages | 9 |
| Journal | Applied Catalysis B, Environmental |
| Volume | 1 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - Jun 26 1992 |
| Externally published | Yes |
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All Science Journal Classification (ASJC) codes
- Catalysis
- Environmental Science(all)
- Process Chemistry and Technology
Cite this
Selective hydrogen cyanide synthesis from CFC12 (CCl2F2) and ammonia over metal catalysts supported on LaF3 and activated charcoal. / Takita, Yusaku; Imamura, Takeshi; Mizuhara, Yukako; Abe, Yumi; Ishihara, Tatsumi.
In: Applied Catalysis B, Environmental, Vol. 1, No. 2, 26.06.1992, p. 79-87.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Selective hydrogen cyanide synthesis from CFC12 (CCl2F2) and ammonia over metal catalysts supported on LaF3 and activated charcoal
AU - Takita, Yusaku
AU - Imamura, Takeshi
AU - Mizuhara, Yukako
AU - Abe, Yumi
AU - Ishihara, Tatsumi
PY - 1992/6/26
Y1 - 1992/6/26
N2 - 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.
AB - 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.
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U2 - 10.1016/0926-3373(92)80034-W
DO - 10.1016/0926-3373(92)80034-W
M3 - Article
AN - SCOPUS:0026875816
VL - 1
SP - 79
EP - 87
JO - Applied Catalysis B: Environmental
JF - Applied Catalysis B: Environmental
SN - 0926-3373
IS - 2
ER -