The hydrogen-sensitized decomposition of hydrogen peroxide

✍ Scribed by R.R. Baldwin; D. Brattan; B. Tunnicliffe; R.W. Walker; S.J. Webster

• Publisher: Elsevier Science
• Year: 1970
• Tongue: English
• Weight: 881 KB
• Volume: 15
• Category: Article
• ISSN: 0010-2180
• DOI: 10.1016/0010-2180(70)90024-6

✦ Synopsis

Although the homogeneous decompositiun of H102 vapor is a nonchain process. a chain reaction occurs in the prescncc UT Ij2. as a result of the reaction OH + H, = H,O + H f I). followed by H + H,lO, = Hz0 + OH (II). At low concentrations chain tcrminotior: results from the reaction 01-I + H202 = HI0 + HO1 f 15). while 3i high H2 concentrations the chain length is Iimited by the reaction H + H2Q2 = H, + IJO2 (Ida). The chain react& is inhibited by O,, as a resuIt of the reaction H + 0, + M = HO2 + M 141. The rtltios X-l,:k, = 5.0 -t 1 .O and li,,,,k Id = 0. I25 rfr O.OI 5 show no significant variation over the rcmperature range 443-WO'C, while the ratio li,,,k,& = 3.8 x IO-'. 2.7 x IO -'_ and 1.8 x IO-' (mm HE)-' at j?o-. 480', ad SUO'C, respoctivel:. From the known values of k;/k, and ofthc velocity constant liz of the reacGon I-I -c O2 =: OH t 0 12). rhecarresponding ~alws of k,, are 6.9 x IO*. 8.5 x IO", and 12.0 x IO" liter m01c'~' XC 1 . respwively.