Results 111 to 120 of about 6,546,850 (243)

Methane to Liquid Fuels over Metal Loaded HZSM-5 Catalyst [PDF]

open access: yes, 2011
ZSM-5 zeolite is an acidic catalyst that is highly potential for the conversion of natural gas to liquid fuels. One of the variables that controls the acidity of the ZSM-5 is its Si/Al ratio.
Anggoro, Didi Dwi   +1 more
core   +1 more source

Establishment and application of material balance equation for deep coalbed methane reservoirs based on coal formation stimulation background

open access: yesMeitan kexue jishu
In recent years, the deep coalbed methane was developed rapidly, with breakthroughs in daily production of tens of thousands of cubic meters per well in multiple deep coalbed methane blocks.
Juntai SHI   +11 more
doaj   +1 more source

Role of Age-Related Shifts in Rumen Bacteria and Methanogens in Methane Production in Cattle

open access: yesFrontiers in Microbiology, 2017
Rumen microbiota are essential for maintaining digestive and metabolic functions, producing methane as a byproduct. Dairy heifers produce large amounts of methane based on fermentation of digested organic matter, with adverse consequences for feed ...
Chong Liu   +7 more
doaj   +1 more source

Protonation Modification of Commercial OPBI as Binders Toward High‐Performance High‐Temperature PEM Fuel Cells

open access: yesAdvanced Science, EarlyView.
Commercial OPBI binders is regulated via a facile formic‐acid protonation strategy without disrupting the polymer backbone. Protonation introduces positively charged benzimidazole sites, inducing interchain electrostatic repulsion that loosens chain packing, enlarges intermolecular spacing, and promotes uniform binder dispersion over catalyst surfaces.
Jinzhen Huang   +5 more
wiley   +1 more source

Fractal Model for Predicting Elemental Sulfur Saturation in the Presence of Natural Fracture

open access: yesACS Omega, 2021
Ting Li   +4 more
doaj   +1 more source

Molecular Electrocatalysis Coupled With a Palladium Membrane Reactor Affords Selective Nitrogen Reduction

open access: yesAdvanced Science, EarlyView.
A palladium membrane reactor delivers active hydrogen to homogeneous nickel terpyridine catalysts, which then selectively hydrogenate dinitrogen to ammonia. ABSTRACT Ammonia production is a cornerstone of modern industry and society, yet the conventional Haber–Bosch process accounts for nearly 2% of the global CO2 emissions. A promising and potentially
Morgan McKee   +11 more
wiley   +1 more source

Porphyrin‐Based Porous Materials for Antibacterial Applications

open access: yesAdvanced Science, EarlyView.
Porphyrin‐based porous materials have excellent photophysical properties and tunable structures for high‐efficiency antibacterial therapy. This review comprehensively discusses the structural design strategies and synthetic pathways of the four main types of porphyrin‐based porous materials, summarizes their cross‐domain antimicrobial applications, and
Xiao‐Xue Liang   +4 more
wiley   +1 more source

Transforming Gas Separations with Scalable Carbon Molecular Sieve Membranes Enabled by Chemically Tuned Hollow‐Fiber Precursors

open access: yesAdvanced Science, EarlyView.
We established a broadly tunable network‐polymer platform for polyimide‐based precursor membranes, extendable to various diamines. Ultrahigh selectivity with demonstrated aging resistance, and scalability via hollow fiber CMS engineering collectively establishes broad and lasting impact for the membrane science and engineering communities.
Yuhe Cao   +6 more
wiley   +1 more source

Kinetics of methane production and hydrolysis in anaerobic digestion of corn stover

open access: yes, 2016
In order to develop a time-saving method for determination of ultimate methane production, obtain the hydrolysis kinetic constant, and identify a determination method for the nonbiodegradable organic fraction of substrate (VSNB) of green and air-dried ...
Huang, XB   +8 more
core   +1 more source

Black Silicon for Solar Fuels

open access: yesAdvanced Science, EarlyView.
Black silicon couples broadband light harvesting with high‐surface‐area catalytic interfaces, offering a versatile photoelectrode platform for solar‐fuel production. Reaction‐specific analysis highlights trade‐offs involving recombination, chemical instability, catalyst‐induced optical shielding, competing reactions, and mass transport.
Neul Ha, Kaiying Wang, Wooseok Yang
wiley   +1 more source

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