Journal•ISSN: 2211-3398
Current opinion in chemical engineering
Elsevier BV
About: Current opinion in chemical engineering is an academic journal published by Elsevier BV. The journal publishes majorly in the area(s): Membrane & Nanotechnology. It has an ISSN identifier of 2211-3398. Over the lifetime, 836 publications have been published receiving 24014 citations.
Topics: Membrane, Nanotechnology, Materials science, Computer science, Catalysis
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TL;DR: In this article, the authors discuss current status and opportunities for catalyst design, electrolyte choice, and electrode structure, as well as a review of catalysts, electrolytes, and electrodes.
Abstract: The rise of atmospheric CO2 levels must be slowed, or better reverted, to avoid further undesirable climate change Electrochemical reduction of CO2 into value-added chemicals using renewable energy is one approach to help address this problem as it will recycle ‘spent’ CO2 (carbon neutral cycle) and it provides a method to store or utilize otherwise wasted excess renewable energy from intermittent sources, both reducing our dependence on fossil fuels Current electrolysis cells accomplish either high Faradaic efficiency (often >95% selectivity) for a desired product (eg CO), or reasonable current density (conversion), whereas both need to be high for a commercial process This review will discuss current status and opportunities for catalyst design, electrolyte choice, and electrode structure
637 citations
TL;DR: In this paper, the impact of nitrogen oxides on the environment and human health including the low-temperature selective catalytic reduction of NOx by ammonia (NH3-SCR) over manganese-based materials is discussed.
Abstract: An overview is given of the impact of nitrogen oxides on the environment and human health including the low-temperature selective catalytic reduction of NOx by ammonia (NH3-SCR) over manganese-based materials. The review gives a comprehensive overview of NH3-SCR chemistry including the impacts of NOx, stringent regulations, limitations on NOx emissions and aspects of the reaction mechanism over Mn-based catalysts using isotopic labeled and in situ FT-IR studies. The review attempts to correlate catalyst activity and stability with the acidity, manganese oxidation state, surface texture, and structural morphology. Prospectively, low-temperature SCR of NOx over Mn-based catalysts opens up novel views to mitigate NOx and help us design the next generation industrial catalysts.
360 citations
TL;DR: Process Integration supporting Process Design, Integration, and Optimisation has been around from the early 1970s and its development has accelerated over the years as its methodology has been able to provide answers and support for important issues regarding economic development.
Abstract: Process Integration (PI) supporting Process Design, Integration, and Optimisation has been around from the early 1970s. PI was developed originally from Heat Integration, which remains the cornerstone for PI continuous advance. It has been closely related to the development of Chemical, Mechanical and Power Engineering supported by the extended implementation of mathematical modelling, simulation and optimisation, and by the application of information technology. Its development has accelerated over the years as its methodology has been able to provide answers and support for important issues regarding economic development — better utilisation and savings regarding energy, water, and other resources. This contribution is targeting towards providing at least a short overview of its historical development, achievements, and future challenges.
356 citations
TL;DR: In this article, the authors present a short review of the chemical, environmental, water and osmotic power communities on FO processes in order to conduct meaningful R&D and develop effective and sustainable FO technologies for clean water and clean energy.
Abstract: The purpose of this short review is to share our understanding and perspectives with the chemical, environmental, water and osmotic power communities on FO processes in order to conduct meaningful R & D and develop effective and sustainable FO technologies for clean water and clean energy.
322 citations
TL;DR: In this paper, a review of the nanostructured materials that can effectively activate peroxymonosulfate (PMS) and persulfate(PS) is presented, emphasizing their catalytic activity, stability and reusability for the removal of organic contaminants.
Abstract: Sulfate radical anion (SO4 −) based advanced oxidation technologies (AOTs) have received a great deal of attention due to their high reactivity with the organic contaminants and high selectivity in complex environmental matrices. Among all SO4 − activation techniques, the heterogeneous activation of precursor peroxides such as peroxymonosulfate (PMS) and persulfate (PS) by nanostructured materials has demonstrated to be an effective method to generate SO4 −. This paper reviews SO4 − chemistry and the nanostructured materials that can effectively activate PMS/PS, namely, transition metal-based nano-catalysts, carbon nanomaterials, and nano-composites. In addition, we also discuss the activation mechanisms of PMS/PS initiated by heterogeneous nanostructured materials, emphasizing their catalytic activity, stability, and reusability for the removal of organic contaminants. This review shows that nanostructured materials have promising potential in environmental remediation based on their excellent catalytic efficiency, large specific surface area, and controllable structure. It also provides perspective on potential future studies on the design of novel nanostructured materials and process development in the field of SO4 − based AOTs.
311 citations