| 502 / | HD | CATALYST, SOLID SORBENT, OR SUPPORT THEREFOR: PRODUCT OR PROCESS OF MAKING |
| 100 | DF | CATALYST OR PRECURSOR THEREFOR {12} |
| 150 | DF | .~ Organic compound containing {13} |
| 152 | ![]() | .~.~ Organic compound including carbon-metal bond {5} |
| 153 | DF | .~.~.~> Diverse metals bonded to carbon |
| 154 | DF | .~.~.~> Including metal compound containing different metal than that bonded to carbon |
| 155 | DF | .~.~.~> Including phosphorus or sulfur or compound containing nitrogen or phosphorus or sulfur |
| 156 | DF | .~.~.~> Including alcohol, phenol, or ether |
| 157 | DF | .~.~.~> Alkali metal bonded to carbon |