High Temperature Calorimeter for the Study of Active Site Distribution on Carbon Catalyst Supports

高温差示微量热计的研究 气体吸附在高表面积材料的设计 和建造。 该系统的设计运行在 温度高达625> K，使用特殊材料， 求婚 对于450 K以下的操作，压力表头 将在受控温度区域内， 目前的近环境设计;在“高- 在“温度”区域（450-625> K），系统可以是 重新配置，将压力计放置在高- 温度区。 该系统将与催化测试结合使用， 将碳表面化学与催化行为相关联 碳载金属催化剂，包括含铁的 双金属 它也将用于钻石的研究 粉末和氮化硅的纳米颗粒。

A high-temperature differential microcalorimeter for the study of gas adsorption on high-surface-area materials is designed and constructed. The system is designed to operate at temperature up to 625> K, using special materials for this propose. For operation below 450> K, the pressure-gauge heads will be inside the controlled-temperature region, as with present near-ambient designs; for operation in the "high- temperature" region (450-625> K), the system can be reconfigured to place the pressure gauges outside the high- temperature zone. The system will be used in combination with catalytic tests to correlate carbon surface chemistry with the catalytic behavior of carbon-supported metal catalysts, including iron-containing bimetallics. It will also be used in studies of diamond powder and of nanoparticles of silicon nitride.