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Catalyst lifetime represents one of the most crucial economic aspects in industrial catalytic processes, due to costly shutdowns, catalyst replacements, and proper disposal of spent materials. Not surprisingly, there is considerable motivation to understand and treat catalyst deactivation, poisoning, and regeneration, which causes this research topic to continue to grow. The complexity of catalyst poisoning obviously increases along with the increasing use of biomass/waste-derived/residual feedstocks and with requirements for cleaner and novel sustainable processes. This book collects 15 research papers providing insights into several scientific and technical aspects of catalyst poisoning and deactivation, proposing more tolerant catalyst formulations, and exploring possible regeneration strategies.
cyclic operation --- n/a --- nickel catalysts --- regeneration --- Cu/SSZ-13 --- syngas --- NH3-SCR --- oxysulfate --- Ni-catalyst --- MW incinerator --- iso-octane --- hydrogenation --- dry reforming of methane --- oxysulfide --- Co-Zn/H-Beta --- Low-temperature catalyst --- Rh catalysts --- deactivation --- vanadia species --- SO2 poisoning --- vehicle emission control --- barium carbonate --- sodium ions --- sulfur deactivation --- tetragonal zirconia --- sulfur poisoning --- Liquefied natural gas --- water --- deactivation by coking --- phase stabilization --- catalyst --- NO removal --- physico-chemical characterization --- octanol --- SEM --- aluminum sulfate --- oxygen storage capacity --- unusual deactivation --- diesel --- nitrous oxide --- exhaust gas --- over-reduction --- poisoning --- catalyst deactivation --- ammonium sulfates --- CO2 reforming --- SO3 --- Rh --- in situ regeneration --- copper --- V2O5–WO3/TiO2 catalysts --- palladium sulfate --- Selective Catalytic Reduction (SCR) --- biogas --- thermal stability --- phthalic anhydride --- octanal --- natural gas --- sulfur-containing sodium salts --- washing --- coke deposition --- vanadia-titania catalyst --- CPO reactor --- homogeneous catalysis --- NOx reduction by C3H8 --- nitrogen oxides --- effect of flow rate --- DeNOx --- catalytic methane combustion --- deactivation mechanism --- TEM --- catalyst durability --- V2O5-WO3/TiO2 catalysts
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For at least six hundred million years, life has been a fascinating laboratory of crystallization, referred to as biomineralization. During this huge lapse of time, many organisms from diverse phyla have developed the capability to precipitate various types of minerals, exploring distinctive pathways for building sophisticated structural architectures for different purposes. The Darwinian exploration was performed by trial and error, but the success in terms of complexity and efficiency is evident. Understanding the strategies that those organisms employ for regulating the nucleation, growth, and assembly of nanocrystals to build these sophisticated devices is an intellectual challenge and a source of inspiration in fields as diverse as materials science, nanotechnology, and biomedicine. However, “Biological Crystallization” is a broader topic that includes biomineralization, but also the laboratory crystallization of biological compounds such as macromolecules, carbohydrates, or lipids, and the synthesis and fabrication of biomimetic materials by different routes. This Special Issue collects 15 contributions ranging from biological and biomimetic crystallization of calcium carbonate, calcium phosphate, and silica-carbonate self-assembled materials to the crystallization of biological macromolecules. Special attention has been paid to the fundamental phenomena of crystallization (nucleation and growth), and the applications of the crystals in biomedicine, environment, and materials science.
chitosan --- Csep1p --- bond selection during protein crystallization --- bioremediation --- education --- reductants --- heavy metals --- biomimetic crystallization --- MTT assay --- protein crystallization --- drug discovery --- optimization --- polymyxin resistance --- lysozyme --- ependymin-related protein (EPDR) --- equilibration between crystal bond and destructive energies --- barium carbonate --- dyes --- microseed matrix screening --- nanoapatites --- colistin resistance --- Haloalkane dehalogenase --- diffusion --- polyacrylic acid --- random microseeding --- protein ‘affinity’ to water --- insulin --- protein crystal nucleation --- agarose --- lithium ions --- ependymin (EPN) --- {00.1} calcite --- seeding --- Campylobacter consisus --- metallothioneins --- Crohn’s disease --- balance between crystal bond energy and destructive surface energies --- color change --- microbially induced calcite precipitation (MICP) --- crystallization of macromolecules --- crystallization --- calcein --- MCR-1 --- Cry protein crystals --- L-tryptophan --- circular dichroism --- crystal violet --- nanocomposites --- halide-binding site --- calcium carbonate --- PCDA --- ultrasonic irradiation --- adsorption --- biochemical aspects of the protein crystal nucleation --- GTL-16 cells --- proteinase k --- neutron protein crystallography --- classical and two-step crystal nucleation mechanisms --- thermodynamic and energetic approach --- heavy metal contamination --- N-acetyl-D-glucosamine --- crystallization in solution flow --- solubility --- biomorphs --- droplet array --- biomimetic materials --- ferritin --- biomineralization --- wastewater treatment --- H3O+ --- silica --- graphene --- supersaturation dependence of the crystal nucleus size --- pyrrole --- micro-crystals --- nucleation --- crystallography --- mammalian ependymin-related protein (MERP) --- high-throughput --- vaterite transformation --- gradients --- materials science --- bioprecipitation --- biomedicine --- human carbonic anhydrase IX --- protein crystal nucleation in pores --- growth --- crystal growth
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