Results 101 to 110 of about 1,795,114 (414)

Understanding the Role of Copper Oxidation State on a TiO2/ZSM‐5 Catalyst for Photocatalytic CO2 Reduction to Methanol

Advanced Materials Interfaces, EarlyView.
The influence of copper oxidation states on TiO₂/ZSM‐5 catalysts is investigated for photocatalytic CO2 reduction to methanol. A Cuδ⁺‐modified Ti₂/ZSM‐5 catalyst (CTZ‐1) exhibits superior activity due to enhanced electronhole separation, the presence of Ti3⁺, and a core–shell structure.
Wibawa Hendra Saputera, Adhi Satriyatama, Ignatius Dozy Mahatmanto Budi, Adhitya Gandaryus Saputro, Muhammad Haris Mahyuddin, Wahyu Prasetyo Utomo, Siska Mutiara, Hoi Ying Chung, Arramel, Fatwa Firdaus Abdi, Dwiwahju Sasongko   +10 more
wiley   +1 more source

Performance of limestone‐based sorbent for sorption‐enhanced gasification in dual interconnected fluidized bed reactors

AIChE Journal, Volume 69, Issue 1, January 2023., 2023
Abstract A possibility to carry out sorption‐enhanced gasification (SEG) is represented by its integration with the calcium looping concept in dual interconnected fluidized beds (DIFB). This article is focused on the sorbent CO2 uptake performance and attrition/fragmentation tendency when operating conditions simulating those of a DIFB‐SEG process are ...
Antonio Coppola, Aida Sattari, Fabio Montagnaro, Fabrizio Scala, Piero Salatino   +4 more
wiley   +1 more source

DETERMINAÇÃO DE METAIS POR TÉCNICAS DE ESPECTROMETRIA ATÔMICA EM AMOSTRAS DE CARVÃO MINERAL E CINZAS UTILIZANDO METODOLOGIA DE SUPERFÍCIE DE RESPOSTA

Química Nova
This paper describes the method optimization using response surface methodology for Cu, Fe, Zn and Na determinations in coal and ash samples by spectrometry techniques.
Camila M. Oliz, Emanoelli R. Lopes, Aline L. Medina, Anderson S. Ribeiro, Adriane M. Nunes   +4 more
doaj   +1 more source

Coal desulfurization by aqueous chlorination [PDF]

, 1982
A method of desulfurizing coal is described in which chlorine gas is bubbled through an aqueous slurry of coal at low temperature below 130 degrees C., and at ambient pressure.
Corcoran, W. H., Grohmann, K., Kalvinskas, J. J., Rohatgi, N. K., Vasilakos, N.   +4 more
core   +1 more source

Toward Sustainable Photocatalysis: Addressing Deactivation and Environmental Impact of Anodized and Sol–Gel Photocatalysts

Advanced Sustainable Systems, EarlyView.
A life‐cycle evaluation of TiO2 photocatalysts for water purification compares the effectiveness of Sol–Gel vs anodic oxides in tetracycline mineralization, targeting deactivation, regeneration, and environmental impact from a cradle‐to‐grave perspective.
Maria Vittoria Diamanti, Manjunath V. Shinnur, MariaPia Pedeferri, Anna Maria Ferrari, Roberto Rosa, Daniela Meroni   +5 more
wiley   +1 more source

Sustainable decision making for chemical process systems via dimensionality reduction of many objective problems

AIChE Journal, Volume 69, Issue 2, February 2023., 2023
Abstract Recent global events and the rise of sustainable investing have made clear that the chemical and energy industry must consider sustainability goals beyond profit maximization to remain competitive. Multiobjective optimization provides an ideal framework for analyzing sustainability tradeoffs, but when four or more objectives are considered ...
Justin M. Russell, Andrew Allman
wiley   +1 more source

SUSTAINABLE DEVELOPMENT OF TERRITORIES OF MINING REGIONS [PDF]

, 2018
Developing innovative technologies of mining coal seams and increasing the competitiveness of coal produced and providing further diversification of the mine using the "post-mining" concept as the basis for sustainable ...
DUBOVIK, Oleksandr, LOHUNOVA, Oleksandra
core  

Dual Charge Transfer Mechanisms in Intimately Bonded S‐scheme Heterojunction Photocatalyst with Expeditious Activity toward Environmental Remediation

Advanced Sustainable Systems, EarlyView.
A novel MBOdCN S‐scheme heterojunction photocatalyst is fabricated using pristine Mg‐Bi2O3 and grayish g‐C3N4, where dynamic dual charge migration paths occur to accelerate exciton dissociation. This composite catalyst realizes high degradation efficiency of up to 99.56% of oxytetracycline (OTC) removal under optimized conditions. The material exhibits
Potlako J. Mafa, Mope E. Malefane, Francis Opoku, Adewale O. Oladipo, Gcina Mamba, Tunde L. Yusuf, Jemal Fito Nure, Sogolo L. Lebelo, Dan Liu, Jianzhou Gui, Bhekie B. Mamba, Alex T. Kuvarega   +11 more
wiley   +1 more source

Greening our Laws: Revising Land Acquisition Law for Coal Mining in India [PDF]

Economic and Political Weekly. Vol. 57, Issue No. 46 (2022), 2023
Laws that govern land acquisition can lock in old paradigms. We study one such case, the Coal Bearing Areas Act of 1957 (CBAA) which provides minimal social and environmental safegaurds, and deviates in important ways from the Right to Fair Compensation and Transparency in Land Acquisition, Rehabilitation and Resettlement Act 2013 (LARR).
arxiv  

Coking coals of the Arctic zone of Russia

Georesursy, 2019
Rational and cost-effective development of the richest hydrocarbon resources of the Arctic region of Russia is impossible without the resumption of solid fuel production. On the Arctic coast of Russia there is the largest base of coking coals of valuable
V.I. Vyalov, A.B. Gurevich, G.M. Volkova, D.A. Skiba, E.P. Shishov, A.A. Chernyshev   +5 more
doaj   +1 more source