1975
DOI: 10.1039/f19757100867
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Gas phase chain reaction of H2O2+ NO2+ CO

Abstract: Reactions in gas phase mixtures of H z 0 2 vapour, NO2 and CO at 292k 2 K have been studied by measurement of the variation of yield of the COz product. It has been shown that the mechanism is the chain reaction sequenceprovided that excess NOz is present. second and third order for M = CO at pressures of 8 and 13.3 kN m-2.An estimate of k4/k2 is obtained which is rationalised in terms of reaction (4) being between Addition of n-butane to the mixture induces the reactionOH+n-C4HIo-+H20+n-C4H9. ( 8)From the res… Show more

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Cited by 13 publications
(3 citation statements)
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“…At ambient temperature and a total pressure of ca. 40 kPa, this procedure yielded a value for the ratio [OH-],: [H,O,], corresponding to 0.45 A-0.03 :1, which is consistent with the total yields shown in Table 1, taking account of the relatively small effect of reaction (5). Such an efficiency of reaction (1) on a boric acid-coated surface lies within the range encountered before.6,s Since boric acid surfaces with efficiencies close to 100% have been obtained,6 it is not unreasonable to expect that the yields shown in Table 1 ( 5 ) We interpret our results on the basis of the mechanism given by equations ( 6)-(10).…”
supporting
confidence: 82%
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“…At ambient temperature and a total pressure of ca. 40 kPa, this procedure yielded a value for the ratio [OH-],: [H,O,], corresponding to 0.45 A-0.03 :1, which is consistent with the total yields shown in Table 1, taking account of the relatively small effect of reaction (5). Such an efficiency of reaction (1) on a boric acid-coated surface lies within the range encountered before.6,s Since boric acid surfaces with efficiencies close to 100% have been obtained,6 it is not unreasonable to expect that the yields shown in Table 1 ( 5 ) We interpret our results on the basis of the mechanism given by equations ( 6)-(10).…”
supporting
confidence: 82%
“…A slight decrease in the total yield of these products with increasing [NO,]: [C,H,] ratio is expected since there is competition for OH. between step (2) and step (5). The sum of the yields in Table 1 OH* + NO,(+M) + HNO,(+M) is significantly less (43 i 4%) than [H,O,],.…”
mentioning
confidence: 96%
“…Finally, several relative rate studies have been performed by using nonphotolytic “dark” chemical sources of hydroxyl radicals. Heterogeneous OH formation in a H 2 O 2 /NO 2 -containing mixture was used by Campbell et al, whereas Barnes et al used the homogeneous thermal decomposition of HO 2 NO 2 in the presence of NO The gas reaction between O 3 and N 2 H 4 was used by Tuazon et al to maintain a OH concentration of about 3 × 10 7 molecule/cm 3 .…”
Section: 3 Relative Rate Techniquesmentioning
confidence: 99%