The oxidation of toluene on various molybdenum-containing catalysts

The activities for the vapour-phase oxidation of toluene of various molybdenum-containing catalysts have been measured in a flow microreactor operating at 1 atm pressure. The catalysts comprised (a) unsupported crystalline MoO3, (b) Mo oxide monolayers on Al2O3, CeO2, TiO2, and ZrO2 supports, and (c) Al-, Ce-, and Zr-molybdate salts. The rates of oxidation of toluene per unit surface area on the monolayer catalysts are higher than those on the corresponding salts, but the selectivities for the partial oxidation products show the opposite trend. The catalytic behaviour of unsupported MoO3 resembles more closely that of the salts than that of the monolayer catalysts. The kinetic data for the oxidation of toluene on all catalysts can be interpreted on the basis of a reduction-oxidation mechanism. The energies of activation for the reduction and oxidation steps are correlated with the ionic potentials of the cations in the supports. Poisoning by pyridine of MoOx/TiO2 has a profound effect on the activity and selectivity of the monolayer catalyst and gives some information about the nature and concentration of the active sites

Polarographic Studies on Some Rh(III) Complexes

418-42

Differential scanning calorimetric studies of several compounds showing order-disorder transition

Differential scanning calorimetric measurements have been carried out for Cul, CuBr, Agl, Ag2S, NaNO2, NaNO3 and KSCN. First-order phase transformations occur with the compounds Cul, CuBr, Agl and Ag2S; NaNO2, NaNO3 and KSCN exhibit λ-type transformations. The enthalpy changes due to phase transitions have been determined. Thermal hysteresis exhibited by these compounds have been examined in the light of their change in unit cell volumes

Oil Price And Real Exchange Rate: The Case Of India

This paper studies the effect of oil price change on the real exchange rate between the Indian rupee and the U.S. dollar.  For that, a model is developed which is based on a monetary model of exchange rate which incorporates the real GDP, real money balances, and the interest rates of both the home and foreign country and the real price of the crude oil.  Quarterly time series data from 1996 to 2012 is used.  Before estimating the model, the time series properties of the data are diagnosed in order to ensure the stationarity of the data.  The data series are found to be integrated of order one and the null hypothesis of no cointegration is rejected.  Therefore an error correction model is developed and estimated.  The estimated results suggest that there is no detectable effect of oil price change on the real exchange rate between the Indian rupee and the U.S. dollar