Processing of hierarchically porous ceramics by rapid thermal processing

Reference Presenter Authors
(Institution)
Abstract
13-040 Farid Akhtar Akhtar, F.(Luleå University of Technology); Microporous ceramics such as zeolites and aluminophosphates are high surface area materials with great potential for catalysis, filtration and gas separation applications. The application criteria require that these microporous ceramics, which are produced in powder form, are assembled into mechanically strong hierarchically porous structured bodies. In this regard, pulsed current processing (PCP) has emerged as a binderless processing method to structure microporous ceramics to hierarchically porous materials without addition of binders. The rapid thermal processing using PCP of porous ceramic powders will be presented to produce volumetrically efficient hierarchically porous structured monoliths and laminates with properties to overcome the limitations of conventional adsorbent materials specifically for decarbonization of power-plant flue gas and biogas streams. We will demonstrate that pulsed current processing (PCP) is a versatile tool to structure porous adsorbents without addition of binders in form of monoliths and laminates and outperform conventionally structured zeolites in all aspects of post-combustion decarbonization of gas streams, including CO2 uptake capacity, high CO2 over CH4 and CO2 over N2 selectivity, rapid uptake and release kinetics and mechanical stability. Moreover, rapid thermal processing of hierarchically porous aluminides and silicides will be introduced by an energy saving method.