Effect of the synthesis conditions of Ni/Al2O3 catalysts on the biogas decomposition to produce H2-rich gas and carbon nanofibers
Abstract The utilization of biogas as carbon source for the co-production of filamentous-like materials and syngas is proposed. Catalysts with different Ni:Al molar ratios, Al 2 O 3 supports and preparation methods were synthesized. The suitability of the catalysts was analyzed considering activity, stability and carbon yield. Catalysts showed a good performance and similar results according to syngas compositions were obtained. However, some differences related to stability over time and carbon yields were detected. TPR analysis and TEM micrographs of the fresh catalysts revealed the presence of two different Ni particles: large Ni particles with low metal support interaction (MSI) that favoured the formation of encapsulating carbon and small Ni particles inserted in the Al 2 O 3 structure with a greater MSI that lead to nanofilamentous carbons formation. Generally both kinds of Ni particles were observed in all catalysts, however their relative abundance was dramatically affected by the Al 2 O 3 employed, the preparation method and the Ni:Al molar ratio.
CO2 as an Oxidant for High-Temperature Reactions
This paper presents a review on the developments in catalyst technology for the reactions utilizing CO2 for high temperature applications. These include dehydrogenation of alkanes to olefins, the dehydrogenation of ethylbenzene to styrene and finally CO2 reforming of hydrocarbon feedstock (i.e. methane) and alcohols. Aspects on the various reaction pathways are also highlighted. The literature on the role of promoters and catalyst development is critically evaluated. Most of the reactions discussed in this review are exploited in industries and related to on-going processes, thus providing extensive data from literature. However some reactions, such as CO2 reforming of ethanol and glycerol which have not reached industrial scale are also reviewed owing to their great potential in terms of sustainability which are essential as energy for the future. This review further illustrates the building-up of knowledge which shows the role of support and catalysts for each reaction and the underlying linkage between certain catalysts which can be adapted for the multiple CO2-related reactions.
Managerial Economics and Organizational Architecture
PART 1: Basic Concepts Chapter 1: Introduction Chapter 2: Economists' View of Behavior Chapter 3: Markets, Organizations, and the Role of Knowledge PART 2: Managerial Economics Chapter 4: Demand Chapter 5: Production and Cost Chapter 6: Market Structure Chapter 7: Pricing with Market Power Chapter 8: Economics of Strategy: Creating and Capturing Value Chapter 9: Economics of Strategy: Game Theory Chapter 10: Incentive Conflicts and Contracts PART 3: Designing Organizational Architecture Chapter 11: Organizational Architecture Chapter 12: Decision Rights: The Level of Empowerment Chapter 13: Decision Rights: Bundling Tasks into Jobs and Subunits Chapter 14: Attracting and Retaining Qualified Employees Chapter 15: Incentive Compensation Chapter 16: Individual Performance Evaluation Chapter 17: Divisional Performance Evaluation Capstone Case Study on Organizational Architecture: Arthur Andersen LLP PART 4: Applications of Organizational Architecture Chapter 18: Corporate Governance Chapter 19: Vertical Integration and Outsourcing Chapter 20: Leadership: Motivating Change within Organizations Chapter 21: Understanding the Business Environment: The Economics of Regulation Chapter 22: Ethics and Organizational Architecture Chapter 23: Organizational Architecture and the Process of Management Innovation Glossary Index