14967-78-3Relevant articles and documents
Decomposition of ammonium perchlorate: Exploring catalytic activity of nanocomposites based on nano Cu/Cu2O dispersed on graphitic carbon nitride
Chandrababu, Parvathy,Raghavan, Rajeev,Sukumaran Nair, Vishnu,Thankarajan, Jayalatha
, (2020)
Copper (Cu) and its oxides are well-known catalysts for thermal decomposition of ammonium perchlorate (AP). Nano Cu/Cu2O dispersed on graphitic carbon nitride (g-C3N4) based nanocomposites were synthesised by single displa
Effects of Hydration on Reactions of O- (H2O)n (n = 0-2). 1. Temperature Dependences of Rate Constants for Reactions with O2, CO2, CO, NO, SO2, CH4, N2O, and H2O
Viggiano, A. A.,Morris, Robert A.,Deakyne, Carol A.,Dale, F.,Paulson, John F.
, p. 8193 - 8197 (2007/10/02)
The effect of hydration on the reactivity of O- (H2O)n (n = 0-2) with the neutrals O2, CO2, CO, NO, SO2, CH4, N2O, and H2O has been investigated as a function of temeprature.Rate constants for the above reactions were measured at 251, 343, and 473 K (O-(H2O)2 reactions were studied at 251 and 343 K only) by using a variable-temperature fast-flow system that incorporates optionally either a selected ion source or a high-pressure ion source.Hydration of O- was found to decrease the reactivity for the neutrals CO, SO2, CH4, and N2O.For reactions of O-(H2O)n with O2 and CO2, no reaction was observed for n=0, but hydration of O- enabled reaction to proceed for O-(H2O)1,2.For reaction with NO, addition of one H2O ligand to O- increased the reactivity, while addition of a second H2O caused a decrease in the rate constant to a value below that of the unsolvated O-.No reaction was observed for any of the ions O-(H2O)0-2 with H2O.Temperature dependences of the rate constants were found to vary depending on the system.Preliminary results from ab initio calculations yield an estimate of >/=25 kcal/mol for the O---H2O cluster bond strength.
Rotational temperature dependences of gas phase ion-molecule reactions
Viggiano, A. A.,Morris, Robert A.,Paulson, John F.
, p. 4848 - 4852 (2007/10/02)
A technique for measuring the rotational temperature dependences of gas phase ion-molecule rate constants is presented.The technique involves measuring the kinetic energy dependences of the rate constants at several temperatures in a variable temperature selected ion flow drift tube.For a monatomic ion, comparing the rate constants at the same center of mass kinetic energy at different temperatures yields the dependence of the rate constant on the internal temperature of the reactant neutral.For neutrals in which the vibrational modes are inactive at the temperatures of the experiment, the internal energy dependence is the rotational temperature dependence.Two examples are presented here, one in which rotational energy significantly influences the rate constants, approximately T-0.5, and one in which it does not.Implications for past drift tube experiments are discussed.