mild temperature oxidation of phenol over rare earth exchanged aluminum pillared montmorillonites

mild temperature oxidation of phenol over rare earth exchanged aluminum pillared montmorillonites

wastewater treatment and re-use of industrial process water are critical issues for the developmentof human activities and environment conservation. the present study was undertaken to evaluate the degradationof organic pollutants taking phenol as the model compound over aluminium pillared montmorillonite and therare earth exchanged analogues, underlining the use of environ friendly clay cataly...

Wet peroxide oxidation of phenol over Cerium impregnated Aluminium and Iron- Aluminium Pillared Clays

Catalytic Oxidation of Methane into Methanol over Copper-Exchanged Zeolites with Oxygen at Low Temperature

The direct catalytic conversion of methane to liquid oxygenated compounds, such as methanol or dimethyl ether, at low temperature using molecular oxygen is a grand challenge in C-H activation that has never been met with synthetic, heterogeneous catalysts. We report the first demonstration of direct, catalytic oxidation of methane into methanol with molecular oxygen over copper-exchanged zeolit...

A Computational Study on the Aerobic Oxidation of Benzene to Phenol in Cu/Exchanged Y Zeolite

In heterogeneous catalysis transition metal-containing zeolites, in particular copperexchanged zeolites, have been studied experimentally [1, 2] as well as theoretically. Zeolites have large surface areas and different active sites (Brønsted acid sites and transition metal centers) which play a significant role in catalysis. In order to study the catalytic oxidation of benzene to phenol using d...

Influence of Operational Parameters and Kinetic Modelling of Catalytic Wet Air Oxidation of Phenol by Al/Zr Pillared Clay Catalyst

Single and mixed oxide Al/Zr-pillared clay (Al/Zr-PILC) catalysts were synthesized and tested for catalytic wet air oxidation (CWAO) of aqueous phenol solution under milder conditions, in a semi-batch reactor. The catalysts were synthesized from natural bentonite clay using ultrasonic treatment during the aging and intercalation steps and were characterized <...

Improved phenol adsorption on carbons after mild temperature steam reactivation.

The purpose of this work is to explore steam reactivation at moderate temperatures of activated carbon exhausted with phenol, a highly toxic compound frequently present in industrial wastewater. The spent carbon was treated with steam at various temperatures (450, 600 and 850 degrees C) and times (from 5 to 60 min). Promising results were obtained by applying moderate temperatures and times. Wh...