Results 51 to 60 of about 31,484 (198)

Recent Advances and Challenges in Ammonia‐Hydrogen Energy Conversion

open access: yesAdvanced Science, EarlyView.
This work summarizes the latest progress of various catalytic methods in ammonia‐hydrogen energy conversion. The challenges and outlook of ammonia‐hydrogen energy conversion system are also emphasized. This work expects to build a blueprint of renewable and efficient ammonia‐hydrogen energy conversion systems under mild conditions.
Menghao Lv   +6 more
wiley   +1 more source

Superlattice Architectures for Advancing Photothermal Catalysis: Mechanisms and Applications

open access: yesAdvanced Science, EarlyView.
This paper provides a timely overview of superlattice architectures in photothermal catalysis, with a systematic review on mechanisms at both atomic and macroscopic scales in different processes, challenges, and future opportunities. ABSTRACT Photothermal catalysis has emerged as a powerful strategy to complement photocatalysis by harnessing full ...
Yuzhao Wu   +5 more
wiley   +1 more source

Electrochemical Nitrogen Fixation for Green Ammonia: Recent Progress and Challenges

open access: yesAdvanced Science, 2023
Ammonia, a key feedstock used in various industries, has been considered a sustainable fuel and energy storage option. However, NH3 production via the conventional Haber–Bosch process is costly, energy‐intensive, and significantly contributing to a ...
Haneul Jin   +5 more
doaj   +1 more source

The secrets of Koberwitz: The diffusion of Rudolf Steiner’s Agriculture Course and the founding of Biodynamic Agriculture [PDF]

open access: yes, 2011
Rudolf Steiner presented his Agriculture Course to a group of 111, farmers and others, at Koberwitz (Kobierzyce, Poland) in 1924. Steiner spoke of an agriculture to ‘heal the earth’ and he laid the philosophical and practical underpinnings for such a ...
Paull, John
core   +1 more source

Technoeconomic and sustainability analysis of batch and continuous crystallization for pharmaceutical manufacturing

open access: yesAIChE Journal, EarlyView.
Abstract In pharmaceutical industries, continuous manufacturing methods have already been well established to improve productivity and process intensification. However, to better understand the trade‐offs of continuous crystallizers over the existing batch production systems, a robust technoeconomic cost and sustainability analysis is necessary to ...
Jungsoo Rhim, Zoltan K. Nagy
wiley   +1 more source

Reaction mechanism and kinetics for ammonia synthesis on the Fe(211) reconstructed surface [PDF]

open access: yes, 2019
To provide guidelines to accelerate the Haber–Bosch (HB) process for synthesis of ammonia from hydrogen and nitrogen, we used Quantum Mechanics (QM) to determine the reaction mechanism and free energy reaction barriers under experimental reaction ...
An, Qi   +3 more
core   +1 more source

Advancements in Graphdiyne‐Based Multiscale Catalysts for Green Hydrogen Energy Conversion

open access: yesAdvanced Intelligent Discovery, EarlyView.
This review systematically explores the fundamental characteristics of graphdiyne (GDY), cutting‐edge field of GDY‐based multiscale catalysts within sustainable energy conversion systems.Special emphasis is placed on the structure‒property relationships in different reactions.
Qian Xiao, Lu Qi, Siao Chen, Yurui Xue
wiley   +1 more source

Carl Bosch and the Haber-Bosch Process [PDF]

open access: yes, 2019
This poster for the Natural Sciences Poster Session at Parkland College features organic chemist Carl Bosch, winner of the Nobel Prize of Chemistry in 1931 for his contribution to the development of chemical high pressure methods, Bosch built on Fritz ...
Larkin, Jacob
core   +1 more source

Dynamics of CrO3–Fe2O3 catalysts during the high-temperature water-gas shift reaction: molecular structures and reactivity [PDF]

open access: yes, 2016
A series of supported CrO3/Fe2O3 catalysts were investigated for the high-temperature water-gas shift (WGS) and reverse-WGS reactions and extensively characterized using in situ and operando IR, Raman, and XAS spectroscopy during the high-temperature WGS/
Daturi, Marco   +6 more
core   +2 more sources

Ammonia production by microbubbles: A theoretical analysis of achievable energy intensity

open access: yesUltrasonics Sonochemistry
The present paper studies the energy intensity of ammonia production by a freely oscillating microbubble placed in an infinite domain of liquid. The initial content of the bubble is a mixture of hydrogen and nitrogen.
Ferenc Kubicsek   +6 more
doaj   +1 more source

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