Catalysis By Design

design theme thumbnail

The aim of the Catalyst By Design (Design) theme was to develop Fundamental knowledge of structure and mechanism promoting innovation. This theme focussed on i) Computational Modelling ii) Use of cutting edge facilities including synchrotrons such as Diamond Light source, neutron sources including ISIS and Laser facilities and iii) Multi scale and multi-technique approach: from nano- to macro. The theme was primarily hosted at the RCaH hub and interacted with all other themes.

See highlight projects and publications below:

Highlight:

Advances in the aqueous phase reforming (APR) of Glycerol (PI Wells, Southampton) Recent work has focused on sol-immobilised prepared Pt nanoparticles for the aqueous phase reforming of glycerol to produce hydrogen as well as many other useful liquid products.

Recent work has focused on sol-immobilised prepared Pt nanoparticles for the aqueous phase reforming of glycerol to produce hydrogen as well as many other useful liquid products. The effect of particle size on the catalyst performance, as well as the reaction mechanism was studied, with the full details published in Applied Catalysis B. We have followed up on this to investigate bimetallic systems, specifically PtCe nanoparticles. CO chemisorption with IR indicates that the Pt surface area is affected by the addition of Ce. STEM HAADF with EDS was performed at the ePSIC facility at I14, Diamond Light Source, concluded Ce is highly dispersed across both the Pt nanoparticles and Al2O3 support, with a good interaction between Pt and Ce (figure 1). XAFS concluded that a Pt/Ce interaction enables Ce to exist in both the 3+ and 4+ oxidation states, making it a very useful catalyst in the water gas shift reaction, which is the reaction responsible for hydrogen production during the aqueous phase reforming of glycerol. Initial testing studies indicated that the addition of Ce resulted in an enhanced glycerol reforming conversion from 40 % for 1 wt. % Pt/Al2O3, up to 59 % for PtCe (1:2 wt. %) /Al2O3.

Find further design projects at the main Cat Hub website

Publications:

Title: The adsorbed state of a thiol on palladium nanoparticles
Authors: Rogers, Scott, Dimitratos, Nikolaos, Jones, Wilm, Bowker, Michael, Kanaras, Antonios G., Wells, Peter Philip, Catlow, Charles Richard and Parker, Stewart
Journal: Phys. Chem. Chem. Phys, 18, 17265 LINK
Title: Towards Microfluidic Reactors for In Situ Synchrotron Infrared Studies
Authors: I. Silverwood, N. Al-Rifai, E. Cao, D.J. Nelson, A. Chutia, P.P. Wells, S.P. Nolan, M.D. Frogley, G. Cinque, A. Gavriilidis, R. Catlow,
Journal: Review of Scientific Instruments LINK

Further publications can be found at the UK Catalysis Hub website