Applied Sciences-Basel
·
2025
·Vol. 15
·期 8
·4225
·
IF 2.5
Shaotao Xu,Liang Xu,Senhao Wang,Hanxi Wang,Sunhua Deng,Han Wang
In order to explore the potential catalysts for kerogen pyrolysis and to clear away obstacles to product liberation in product recovery, the facilitation effects of acidic chlorinated salts (MnCl2·4H2O, AlCl3·6H2O, CrCl3·6H2O, and MoCl5) on pyrolysis behavior of Huadian oil shale (OS) were investigated. Two different ways of wet mixing and dry mixing were used, and indoor pyrolysis experiments were carried out to characterize the different products collected by multiple analyses. The acidic chloride solution could effectively remove large amounts of calcite from OS during wet mixing, whereas the calcite in the dry-mixed samples decomposed significantly during pyrolysis, releasing significant amounts of CO2. AlCl3could improve the pore space by removing carbonates, which can promote the pyrolysis of kerogen and increase oil yield. The improved pore space can also promote the conversion of kerogen and the release of hydrocarbon products, while the large amounts of CO2released during pyrolysis of dry-mixed samples can promote the migration of heavy fractions. This study emphasizes the great potential of acid chlorates in counteracting reservoir blockage and facilitating pyrolysis for OS in situ exploitation.
研究领域:
石油工程
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
Polymer-Plastics Technology and Materials
·
2021
·
IF 2.371
Yongke Zhao,Guomin Song,Guangxin Chen,Zheng Zhou,Qifang Li
Herein, a kind of low-κ epoxy composites with excellent comprehensive properties were prepared by introducing chloride salt of octa (aminopropylsilsesquioxane). The dielectric constant (106 Hz) of the composite was decreased by 0.94 when the fillers loading was only 3 wt%. The thermal stability and shore hardness were both improved, and the water adsorption was reduced. The improved properties of the composites were mainly attributed to the intrinsic cage-like structure of the filler and its good dispersion in the matrix. Moreover, the strong interface interaction between the filler and matrix also played an important role.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
Polymers
·
2022
·Vol. 14
·期 13
·2615
·
IF 4.967
Yunxia Feng,Yuhong Luo,Junfeng Gao,Peng Guo,Yuntao Jiang,Fumao Liu
The massive application of chloride salts has a direct effect on the corrosion of structures and vehicles and decreases durability as well as road pavement damage. A novel slow-release deicer with a core-shell structure was prepared to reduce the salts’ impacts, subsequently characterized by scanning electron microscopy (SEM) with energy dispersive spectroscopy (EDS), differential scanning calorimetry (DSC), and thermogravimetric analysis (TG). The conductivity evaluation, moisture absorption, and the snow or ice melting performance of the deicer were also tested. The core-shell deicer with different replacement rates was used to prepare the deicing asphalt mixture based on the equivalent volume replacement method. In this study, the high- and low-temperature performance, moisture damage resistance, and snow or ice melting capacity of mixtures were evaluated in the laboratory. The results show that the low-temperature and moisture stability performances decreased, and high-temperature performance improved, as the content of the core-shell deicer was increased. It is confirmed that the replacement rate of the deicer filler should be lower than 75% to meet the specification requirements. The prepared deicing asphalt mixture has good snow and ice melting performance and can reduce the bonding strength between ice and pavement surface. Durability and cost–benefit analysis are expected in further investigations.Keywords:deicing asphalt mixture;slow-releasing deicer with core-shell;characterization;road performance;snow melting performance
研究领域:
土木工程
·
材料科学
·
交通工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SOLAR ENERGY MATERIALS AND SOLAR CELLS
·
2025
·
IF 6.3
Wenyuan Liu,Hao Liu,Zhoufu Wang,Honghong Wang,Yan Ma,Zhenghuang Quan,Xitang Wang
Composite phase change materials are particularly valuable for high temperature thermal energy storage and waste heat recovery, but the poor energy storage density and thermal conductivity limit their practical applications. Herein, this study proposed a concurrent enhancement of composite materials by utilizing SiO 2 nanoparticles-decorated KCl-NaCl as phase change materials and forsterite with high specific heat as matrix materials. The results showed that forsterite and chloride salts exhibited excellent chemical compatibility, and the appropriate content of chloride salts and suitable molding pressure were beneficial to enhancing the densification of composite materials while increasing their thermal and mechanical properties. Specifically, the composite materials with chloride salts content of 60 wt% and molding pressure of 40 MPa demonstrated the best performance, with an energy storage density of 901.7 J/g (100–800 °C), a latent heat of 180.5 J/g, thermal conductivity of 0.78–1.47 W/(m·K) at 100–500 °C, and a compressive strength of 41.5 MPa. Notably, the addition of 1.0 wt% SiO 2 nanoparticles resulted in the formation of needle-like nanostructures, which enhanced the thermal conductivity and energy storage density of composite materials. The composite materials exhibited good chemical stability after 500 thermal cycles, accompanied by an enhancement in thermal conductivity due to the formation of middle layer between forsterite and chloride salts. This suggests a promising potential for composite materials in thermal energy storage applications.
研究领域:
材料科学
·
储能
·
纳米技术
·
热工学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2022
·
IF 9.965
Feng Chu,Yezi Hu,Kaiyue Zhang,Xiangjun Li,Guixia Zhao,Xiubing Huang,Ge Wang
Conjugated polymers have a broad application foreground in the field of photocatalytic organic synthesis to produce value-added chemicals due to their functional diversity, broad light responsive ability, high thermal and chemical stability, and tunable band structure . Herein, using mixed chloride salts (i.e., NaCl/LiCl) as building template, a series of porous conjugated polymers constructed by melamine and terephthalaldehyde monomers were obtained through a Schiff-base reaction in the absence of any external solvent. Melamine-terephthalaldehyde polymer (i.e., PMTPA-x, x represents the mass ratio of salt-mixture to mixed precursors of PMTPA) materials displayed porous morphologies and possessed different energy band structures via regulating the mass ratio of mixed-salt to monomers. Specifically, PMTPA-20 has a larger specific surface area and more suitable redox potential towards the photocatalytic oxidative coupling of amines to imines . Under visible light , with molecular oxygen as oxidant, PMTPA-20 achieves 97% conversion of benzylamine in 8 h which is 3.9 times higher than that of pristine PMTPA (25% conversion in 8 h). In addition, PMTPA-20 catalyst has good structure stability and reusability performance for photocatalytic reactions.
研究领域:
材料科学
·
化学工程
·
光化学
·
有机合成
·
催化
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）