Catalysis renewable

NOVEL MATERIALS FOR CATALYSIS AND ANALYSIS DERIVED FROM RENEWABLE RESOURCES... 

Die Natur der Chemie, FUTURE (Hoechst Magazin), August 1996 Vision of large-scale production in shoebox-sized plants nature and plant ceUs as model for micro reactors sustainable development central role of catalysis general advantages of micro flow use of clean raw materials minimization of waste the next step in the sequence acetylene-to-efhylene chemistry ethane chemistry renewable resources combinatorial chemistry intelligent and creative solutions [229]. 

Centi, G. and van Santen, R.A. (2007) Catalysis for Renewables from Feedstock to Energy Production, Wiley-VCH Verlag GmbH, Weinheim. 

Del Amor Villa, E.M. and Wichmann, R. (2005) Membranes in the enzymatic synthesis of biotensides from renewable sources. Catalysis Today, 104 2 -11. 318—322. 

The effectiveness of zeolites in catalysis and separation can often be improved by the textural and chemical properties of the matrices in which they are imbedded. Chitosan gels issued from renewable resources are already used as supports for the preparation of heterogeneous catalysts in the form of colloids, flakes or gel beads [1, 2], In this study we present several methods for the incorporation of zeolites in chitosan matrices and characterize the synergic effect of the components on the properties of the composite. 

Davda, R. R. Shabaker, J. W. Huber, G. W. Cortright, R. D. Dumesic, J. A., A review of catalytic issues and process conditions for renewable hydrogen and alkanes by aqueous-phase reforming of oxygenated hydrocarbons over supported metal catalysts. Applied Catalysis B 2005,56,171. 

The scope of this chapter is to present a concise and fundamental overview of the relationship between modem catalysis and chemical reaction engineering through one of the topics that will certainly be present among the future directions in both fields production of hydrogen fuel from fossil and renewable energy sources and its use in the fuel cells-based energy conversion technology. 

The chapters that follow are based on lectures presented at the Idecat conference on Catalysis for Renewables , Rolduc, The Netherlands, which had been organized to discuss different technology options and related catalytic advances or challenges. Whereas the main focus is on biomass related catalytic technologies, lectures on fossil fuel technology as well as solar and biotechnological conversion paths were also included. 

Catalysis for Renewables From Feedstock to Energy Production... 

The need for renewable technologies creates ample catalytic opportunities. We have seen that the techno-economic scenarios favor different technologies in the course of time. This implies on ongoing need for process innovation, for which catalysis is the chemical back bone. Clearly, progress requires a sustained integrated effort with the many other disciplines that are needed to develop the devices and the required infrastructure. 

Bioethanol upgrading and valorization is another area in which catalysis will be a key player. The decrease in ethanol production cost and the need to realize a transition to a society based more on renewables are two driving forces to develop new catalytic processes for bioethanol conversion. However, without improvements in the efficiency and selectivity of the various processes for ethanol, and in general biomass conversion, which are possible only by the introduction of better and/or new catalysts, this transition to a bio-based economy will probably not be possible. Research on catalysis will thus be the enabling factor for this change towards a more sustainable society. 

Special attention is given to the integration of biocatalysis with chemocatalysis, i.e., the combined use of enzymatic with homogeneous and/or heterogeneous catalysis in cascade conversions. The complementary strength of these forms of catalysis offers novel opportunities for multi-step conversions in concert for the production of speciality chemicals and food ingredients. In particular, multi-catalytic process options for the conversion of renewable feedstock into chemicals will be discussed on the basis of several carbohydrate cascade processes that are beneficial for the environment. 

---