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Use of Pillared Clay-Based Catalysts for Wastewater Treatment through Fenton-Li...

Clays, both natural and physical-chemically modified, are attractive materials for the preparation of supported catalysts. In this chapter, a review is made regarding the use of pillared interlayered clays (PILCs) in heterogeneous Fenton-like advanced oxidation processes. Their applications in pollutants degradation is summarized, with particular emphasis on the effect of the main operating conditions (e.g., in...

Comparison of nanosized gold-based and copper-based catalysts for the low-tempe...

In this paper the catalytic performances for the low-temperature water-gas shift reaction of Au/TiO2 type A (from World Gold Council), Au/CeO2 (developed at UPV-CSIC), CuO/Al2O3 (from BASF), and CuO/ZnO/ Al2O3 (from REB Research & Consulting) have been compared. The catalysts were characterized by different techniques such as Raman spectroscopy, BET surface area measurements, temperature-programmed reduction, a...

Polymeric Membrane Reactors

The aim of this chapter is the study of membrane reactors with polymeric membranes, particularly catalytic polymeric membranes. After an introduction where the main advantages and disadvantages of the use of polymeric membranes are summarised, a review of the main areas where they have been applied, integrated in chemical reactors, is presented. This excludes the field of bio-membranes processes, which is analy...

Teaching Laminar-Flow Reactors: From Experimentation to CFD Simulation

An integrated chemical engineering lab experiment is described in this paper. It makes use of a laminar-flow tubular reactor (LFTR) through consecutive lab sessions. In a first session (not described here), the pseudo first-order kinetic constant for the reaction between crystal violet and sodium hydroxide is determined at different temperatures in a batch reactor. Then a tracer experiment is used to characteri...

Membranes for Direct Methanol Fuel Cell Applications: analysis based on charact...

A critical analysis is performed about fundamental aspects regarding the direct methanol fuel cell (DMFC) technology, focusing mainly on the proton exchange membrane (PEM). First, the basic DMFC operation principles, thermodynamic background and polarization characteristics are presented with a description of each of the components that comprise the membrane electrode assembly (MEA) and of the DMFC testsystem u...

Sucrose Inversion – An Experiment on Heterogeneous Catalysis

llustration of heterogeneous catalysis concepts in laboratory courses is not usually simple or economical. For our undergraduate senior lab course we have developed an environmentally friendly experiment dealing with several aspects of heterogeneous catalysis, having in mind the use of readily available and relatively inexpensive equipment, and chemicals on a compact setup, which students can safely operate. Th...

Kinetics of Propene Hydrogenation over Palladium Nanoclusters

Kinetics and Mechanism of the Selective Oxidation and Degradation of n-Butane o...

Effects of cesium doping on the kinetics and mechanism of the n-butane oxidativ...