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7801
A Review of the Heterogeneity of Organic-Matter-Hosted Pores in Shale Reservoirs
Published 2022-11-01“…The reduction in macropore volume first appears, and the collapse of macropores could lead to an increase in micropore and mesopore volumes. An important turning point for the thermal evolution of OM is 3.5% Ro. …”
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Article -
7802
Strength properties, microstructural evolution, and reinforcement mechanism for cement-stabilized loess with silica micro powder
Published 2024-07-01“…From the quantitative analysis, it can be seen that with the addition of silica micro powder and cement, the macropores and mesopores between loess particles are transformed into small pores and micropores, the orientation of pores is enhanced, and the loess structure becomes more compact, which further revealed the mechanism of silica micro powder combined with cement to stabilize loess. …”
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Article -
7803
Produção de carvão ativado a partir de bagaço e melaço de canade- açúcar = Production of granular activated carbons from sugar cane bagasse and molasses
Published 2006-01-01“…Results showed that the activated carbons presented yield of 23% in relation to the initial pellets, surface areas from 272 to 455 m2·g-1, and that micro and mesopores were predominant in the pore size distribution. …”
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7804
Exploration and development potential of the low-maturity continental shale gas in the Fuxin Basin
Published 2019-10-01“…Its pores are mainly mesopores with an average porosity of 3.47%. There are diverse reservoir spaces, which is favorable for the accumulation of shale gas. …”
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Article -
7805
Analysis of shale pore structure characteristics based on nitrogen adsorption experiment and fractal FHH model: a case study of 7th member of Triassic Yanchang Formation in Huachi...
Published 2023-05-01“…The pores are mainly micropores and mesopores, with macropores less developed. Most samples have fractal characteristics. …”
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Article -
7806
Characterization of Modified Natural Minerals and Rocks for Possible Adsorption and Catalytic Use
Published 2020-10-01“…Hg porosimetry showed that acid leaching using 0.1 M HCl and 3 M HCl resulted in a significant increase in the macropore volume in phonolite, and during leaching using 3M HCl there was an increase of the mesopore volume. From the better properties, cost-efficient and environmental points of view, the use of these materials could be an interesting solution for catalytic and sorption applications.…”
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Article -
7807
Effect of Lignin Removal on the Hygroscopicity of PMMA/Wood Composites
Published 2022-08-01“…When lignin was almost completely removed, all mesopores in the cell wall were filled with PMMA. The results of the moisture absorption analysis isotherm curve showed that the moisture absorption content of the wood was positively correlated with the amount of lignin removed, and the moisture absorption content of the PMMA/DW composite was negatively correlated with the amount of lignin removed. …”
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Article -
7808
The key causes and characteristics of spontaneous combustion of coal seams affected by igneous intrusion
Published 2023-02-01“…In order to find out the key causes of changes in spontaneous combustion characteristics of igneous intrusive coal seams, this paper took the Daxing Coal Mine in Tiefa Coalfield as example for analysis, which was widely invaded by igneous and had serious coal spontaneous combustion disasters.Metamorphic coal and unaffected primary coal were collected from the study area.Specifically, this paper studied the patterns of heat production and temperature rise, gas production rules, and microscopic structure parameters of coal samples by synchronous thermal analyzer and coal spontaneous combustion characteristic measuring device.The experimental results show that the igneous intrusion caused the mutation in the spontaneous combustion characteristics of the coal.Compared with the primary coal, there was significantly higher oxidation heat release of the metamorphic coal at the low temperature stage.Also, the crossing point temperature of metamorphic coal was reduced by 13.2 ℃, and it entered the stage of oxidation and weight gain earlier than the primary coal.When the environment temperature exceeded 90 ℃, the oxidation heat generation and reaction rate of metamorphic coal increased rapidly, which showed higher oxygen consumption rate and faster generation rate of oxidative gas products such as CO and CO2.This demonstrated higher oxidation activity of metamorphic coal than that of primary coal.The analytic results of physicochemical microstructure showed that the high temperature and pressure of igneous intrusion changed the pore structure of coal, which reduced the pore volume and specific surface area of micropores/mesopores in metamorphic coal, and the pore volume of macropores was three times higher than that of primary coal.The average pore size and porosity increased significantly, which was conducive to the transport, migration and adsorption reaction of oxygen molecules in the coal structure.At the same time, igneous intrusion reduced the oxygen-containing functional groups of metamorphic coal, and the content of aliphatic hydrocarbons with higher activity increased from 27.98 % to 29.07 %, which enhanced the oxidative activity of metamorphic coal.Moreover, igneous intrusion caused problems such as increased air leakage, long oxidation time of left coal, and wide oxidation zone during the mining, eventually leading to severe coal spontaneous combustion disasters.…”
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Article -
7809
Utilization of landscape biomass waste as activated carbon to scavenge oxytetracycline: Attraction mechanism, batch and continuous studies
Published 2023-11-01“…The resulting LBWAC exhibited 973.21 m2/g of BET surface area, 842.18 m2/g of mesopores surface area, 0.3911 cm3/g of total pore volume, and 2.44 nm of average pore diameter. …”
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7810
Reservoir Characteristics of the Lower Jurassic Lacustrine Shale in the Eastern Sichuan Basin and Its Effect on Gas Properties: An Integrated Approach
Published 2020-08-01“…The pores mainly constitute of mesopores (avg. 23.2 nm). The clay minerals with a large number of interparticle pores in the SEM contributes most to surface area in the shale lithofacies with a moderate TOC. …”
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Article -
7811
Dual UV irradiation-based metal oxide nanoparticles for enhanced antimicrobial activity in Escherichia coli and M13 bacteriophage
Published 2017-11-01“…Their primary particle sizes were less than 100 nm with irregular shapes, which had an 8.6~25.6 m2/g of specific surface area with mesopores of 22~262 nm. The electrostatic properties of MO nanoparticles were modulated after UV irradiation. …”
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Article -
7812
Sintesis lempung montmorillonit terpilar Fe2O3 dan kajian sifat-sfat kimia fisiknya=Synthesis of Fe2O3 pillared montmorillonite clay and study of its physico-chemical properties
Published 2004“…The N2 adsorption isotherm on Fe203 (Fe-PILC) are of type IV in the BDDT classification indicating that these pillared clay have both micropore and mesopore. The surface acidity of Namontmorillonite and Fe203 pillared clay were 0.5096 mmol/ g and 2.8498 mmol/ g to 7.0515 mmol/ g, respectively. …”
Article -
7813
Effect of four soil and water conservation practices on soil physical processes in a non-terraced oil palm plantation
Published 2015“…Hence, EFB was most effective to increase soil aggregation, aggregate stability, soil water retention at field capacity, available soil water content, and the relative proportion of soil mesopores. Due to these improved soil physical properties, EFB also gave the highest soil water content. …”
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Article -
7814
Adsorption of reactive dyes from aqueous solutions by quaternized palm kernel shell
Published 2013“…Surface characterization of QPKS by SEM and BET analysis confirmed the surface pore enlargement from mesopores to macropores after quaternization. Furthermore, chemical properties such as point zero charge,surface chemistry and chemical composition were determined. …”
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Thesis -
7815
Synthesis of ethyl levulinate over sulfonated lignin-based carbon catalyst as a fuel additive to biodiesel-diesel blends towards engine emissions.
Published 2023“…The results show that the catalyst has good acidity (1.30 mmol/g) and suggested thermal stability up to 200 °C, as well as unique surface morphology with a large surface area of 193 m2/g contributed by mesopores and micropores. A high initial yield of EL of 84.3 mol% was obtained over LHS-400-1 at optimum conditions of 6 ethanol-to-LA molar ratio, 15 wt% of catalyst, and 5 h at 80 °C. …”
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7816
The Development Of Tin Oxide Based Catalyst For Environmental Emission Control
Published 2001“…The nitrogen adsorption analysis reveals that the best catalysts are in the form of pore mixture namely mesopore and micropore. The pores are identified as open cylindrical in shaped with pore diameter of 10 nm. …”
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Monograph -
7817
Accumulation and exploration of continental shale gas resources of Cretaceous Shahezi Formation in Lishu fault depression, Songliao Basin, NE China
Published 2022-06-01“…The pores are in the mesopore range of 10–50 nm, and the microfractures are mostly 5–10 μm wide. …”
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Article -
7818
Effect of wet-dry cycles on shear strength of residual soil
Published 2021-06-01“…The nuclear magnetic resonance (NMR) test showed that the content of micropores in soil samples decreased, and the proportion of mesopores and macropores increased, resulting in a decrease in soil strength. …”
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7819
Design and Synthesis of Bisulfone-Linked Two-Dimensional Conjugated Microporous Polymers for CO<sub>2</sub> Adsorption and Energy Storage
Published 2023-04-01“…TBN-BSU CMPs exhibited a higher specific surface area and porosity of 391 m<sup>2</sup> g<sup>−1</sup> and 0.30 cm<sup>3</sup> g<sup>−1</sup>, respectively, due to their large micropore and mesopore structure. These CMPs with extended π-conjugated frameworks and high surface areas are promising organic electroactive materials that can be used as electrode materials for supercapacitors (SCs) and gas adsorption. …”
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7820
Pore characteristics and formation mechanism of high-maturity organic-rich shale in Lower Cambrian Jiumenchong Formation, southern Guizhou
Published 2018-03-01“…The pores are dominated by micropores and mesopores, while macropores are very rare. The pores of the organic-rich shale mainly are organic pores with small diameter usually less than 30 nm, and the pore boundary form is irregular, the inorganic mineral pores are not developed. …”
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