A simple preparation of stable, nonreactive surfaces for gas kinetic studies of reactions of hydrogen atoms

A quartz surface has been prepared for which γ, the mean collisional efficiency for removal of hydrogen atoms, is given by\documentclass{article}\pagestyle{empty}\begin{document}$$ 10^4 \gamma = 0.78 \pm 0.30 $$\end{document}over the temperature range from 315 to 818 K. The preparation “cleans” the surface by contact with 10 M aqueous NaOH for ˜ 15 hr and then deactivates it by contact with 10 M aqueous HNO 3 for ˜15 hr. The surface is stable and long‐lived even after prolonged contact with air. Preliminary results show that a similar result can be obtained using Pyrex glass surfaces.