Catalyst coking is one of the key challenges in hydrocarbons processing. Herein, we studied potential reacting coke deposits with hydrogen to regenerate methanol–to–hydrocarbons (MTH) performance archetypical ZSM-5 catalysts exhibiting low-to-medium Si/Al atomic ratios (14–39). The reactivation substantially enhanced at elevated pressures (20–30 bar), restoring significant part MTH activity (>8...

One of the most important objectives in chemistry is to understand and control the selectivity towards a desired reaction pathway. In catalysis, selectivity is thought to be governed by the catalyst’s structure; many practical catalysts, however, have an inherently complex structure that obstructs their detailed understanding; therefore, simplified materials are studied instead. In order to adv...

Enzymatic transesterification by using lipase as catalyst has become more attractive for the production of biodiesel due to easy separation of products such as glycerol and fatty acid esters. Comparative studies of enzyme catalyzed transesterification of three less attended non edible oils (jatropha, karanja and putranjiva) have been discussed. The maximum yield has been obtained at 3:1 molar r...

This paper describes the design and operation of a laboratory plant with a fixed-bed continuous-flow reactor, fully automated and controlled from a personal computer. The automated variables include two gas flows, one liquid flow, six temperatures, two pressures, one circulation of a cooling liquid, and 10 electrovalves. An adaptive-predictive control system was used. The chemical process chose...