DEB消氢剂的吸氢性能

以DEB和Pd/C催化剂为原料,按照一定配比,采用研磨法制备出DEB-Pd/C消氢剂。利用PVT法对DEB-Pd/C消氢剂的吸氢性能进行了研究,同时利用拉曼光谱考察了其消氢前后的性质变化。初步实验结果表明:新制备的消氢剂实际吸氢容量可达理论吸氢容量的87.5%,在达50%理论吸氢容量时仍能将氩气中的氢体积分数控制在10×10-6以下;拉曼光谱测量表明,DEB-Pd/C消氢剂的炔键振动强度随着消氢剂吸氢量的增加而减弱。

Hydrogen Uptake Capability of DEB Getter

DEB hydrogen getter has been prepared by mixing DEB(w=75%) and Pd/C(w=25%) catalyst and then grinding for 5 h.The hydrogen uptake capability has been characterized by PVT method.Raman spectrum was used to characterise DEB hydrogen getter before and after hydrogen uptake process.The results show that the hydrogen uptake capacity of DEB can attain 87.5% of the theoretical value.When the uptake capacity of DEB reaches 50% of the theoretical value,the residual hydrogen content in the argon can be also controlled to less than 10×10-6.Raman spectra analysis indicates that the strength of stretch vibration of the carbon-carbon triple bond gradually becomes weaker as the hydrogen uptake proceeds.