The kinetics of side reactions in dehydrogenation of propane over a supported platinum catalyst modified by tin was investigated. Catalytic dehydrogenation over a commercial Pt-Sn/γ-Al2O3 was carried out in a laboratory-scale plug-flow reactor at 580 to 620oC under atmospheric pressure. Several kinetic models derived from different reaction mechanisms were tested using experimental data obtained over a range of reaction conditions. It was found that the kinetics of the main dehydrogenation reaction was best described in terms of a Langmuir-Hinshelwood mechanism where adsorption of propane was the rate controlling step. Simple power low rate expressions were used to express the kinetics of side reactions.

Keywords:
Propane Dehydrogenation

Side Reactions
Platinum Catalyst
Kinetics

An efficient and simple new method for the preparation of 1-amidoalkyl-2-naphthols as biologically interesting compounds is described. One-pot multi-component condensation of β-naphthol, aromatic aldehydes and acetamide/urea in ionic liquid 1-butyl-3-methylimidazolium bromide ([Bmim]Br) under microwave and catalyst-free conditions affords the title compounds in high yields and in short reaction times.

Keywords:
1-Amidoalkyl-2-naphthol

Catalyst-free
Ionic liquid
Multi-component reaction
Microwave.