Relevant bibliographies by topics / Hierarchical porous network

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  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers

Academic literature on the topic 'Hierarchical porous network'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Hierarchical porous network"

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Rigby, Sean P., Muayad Hasan, Lee Stevens, Huw E. L. Williams, and Robin S. Fletcher. "Determination of Pore Network Accessibility in Hierarchical Porous Solids." Industrial & Engineering Chemistry Research 56, no. 50 (December 6, 2017): 14822–31. http://dx.doi.org/10.1021/acs.iecr.7b04659.

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Luan, Yuting, Lei Wang, Shien Guo, Baojiang Jiang, Dongdong Zhao, Haijing Yan, Chungui Tian, and Honggang Fu. "A hierarchical porous carbon material from a loofah sponge network for high performance supercapacitors." RSC Advances 5, no. 53 (2015): 42430–37. http://dx.doi.org/10.1039/c5ra05688h.

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High surface area, hierarchical porous carbon materials were obtained by carbonization and activation process of the loofah sponge. The porous carbon materials with good conductivity exhibit high energy density and power density.
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Tan, Kwan Wee, Byungki Jung, Jörg G. Werner, Elizabeth R. Rhoades, Michael O. Thompson, and Ulrich Wiesner. "Transient laser heating induced hierarchical porous structures from block copolymer–directed self-assembly." Science 349, no. 6243 (July 2, 2015): 54–58. http://dx.doi.org/10.1126/science.aab0492.

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Development of rapid processes combining hierarchical self-assembly with mesoscopic shape control has remained a challenge. This is particularly true for high-surface-area porous materials essential for applications including separation and detection, catalysis, and energy conversion and storage. We introduce a simple and rapid laser writing method compatible with semiconductor processing technology to control three-dimensionally continuous hierarchically porous polymer network structures and shapes. Combining self-assembly of mixtures of block copolymers and resols with spatially localized transient laser heating enables pore size and pore size distribution control in all-organic and highly conducting inorganic carbon films with variable thickness. The method provides all-laser-controlled pathways to complex high-surface-area structures, including fabrication of microfluidic devices with high-surface-area channels and complex porous crystalline semiconductor nanostructures.
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Ma, Tian Yi, Tie Zhen Ren, and Zhong Yong Yuan. "Synthesis and Photocatalytic Performance of Hierarchical Porous Titanium Phosphonate Hybrid Materials." Advanced Materials Research 132 (August 2010): 87–95. http://dx.doi.org/10.4028/www.scientific.net/amr.132.87.

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A hierarchical meso-/macroporous titanium phosphonate (TPPH) hybrid material was prepared via a simple surfactant-assisted process with the use of the precursor tetrabutyl titanate and 1-hydroxy ethylidene-1,1-diphosphonic acid. The prepared hybrid TPPH presented amorphous phase, exhibiting a hierarchical macroporous structure composed of mesopores with a pore size of 2.0 nm. The BET surface area is 256 m2/g. The hydroxyethylidene-bridged organophosphonate groups were homogeneously incorporated in the network of the hierarchical porous solid, as revealed by FT-IR, MAS NMR, XPS, and TGA measurements. The optical properties and photocatalytic activity of the hierarchical TPPH material were investigated in comparison with those of hierarchical porous titanium phosphate and pure mesoporous titania materials, showing superiority of the inorganic-organic hybrid framework, suggesting promising photocatalysts for wastewater cleanup.
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Liu, Qingzhao, Tao Xue, Lina Yang, Xiaoxia Hu, and Haiyan Du. "Controllable synthesis of hierarchical porous mullite fiber network for gas filtration." Journal of the European Ceramic Society 36, no. 7 (June 2016): 1691–97. http://dx.doi.org/10.1016/j.jeurceramsoc.2016.01.037.

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Song, Yan, He Wang, Qianli Ma, Dan Li, Jinxian Wang, Guixia Liu, Ying Yang, Xiangting Dong, and Wensheng Yu. "3D nitrogen-doped hierarchical porous carbon framework for protecting sulfur cathode in lithium–sulfur batteries." New Journal of Chemistry 43, no. 24 (2019): 9641–51. http://dx.doi.org/10.1039/c9nj01017c.

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Xu, Zili, Fangfang Zhang, Weiran Lin, and Haining Zhang. "Polymer network-derived nitrogen/sulphur co-doped three-dimensionally interconnected hierarchically porous carbon for oxygen reduction, lithium-ion battery, and supercapacitor." RSC Advances 9, no. 63 (2019): 36570–77. http://dx.doi.org/10.1039/c9ra07619k.

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Liu, Lili, Haipeng Guo, Yuyang Hou, Jun Wang, Lijun Fu, Jun Chen, Huakun Liu, Jiazhao Wang, and Yuping Wu. "A 3D hierarchical porous Co3O4 nanotube network as an efficient cathode for rechargeable lithium–oxygen batteries." Journal of Materials Chemistry A 5, no. 28 (2017): 14673–81. http://dx.doi.org/10.1039/c7ta03553e.

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Liang, Yeru, Luyi Chen, Dongyang Zhuang, Hao Liu, Ruowen Fu, Mingqiu Zhang, Dingcai Wu, and Krzysztof Matyjaszewski. "Fabrication and nanostructure control of super-hierarchical carbon materials from heterogeneous bottlebrushes." Chemical Science 8, no. 3 (2017): 2101–6. http://dx.doi.org/10.1039/c6sc03961h.

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Super-hierarchical carbons with a unique carbonaceous hybrid nanotube-interconnected porous network were fabricated by utilizing well-defined carbon nanotube@polystyrene bottlebrushes as building blocks.
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Zhao, Yuhang, Ping Liu, Xiaodong Zhuang, Dongqing Wu, Fan Zhang, and Yuezeng Su. "Ionothermally synthesized hierarchical porous Schiff-base-type polymeric networks with ultrahigh specific surface area for supercapacitors." RSC Advances 7, no. 32 (2017): 19934–39. http://dx.doi.org/10.1039/c7ra01203a.

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A hierarchical porous polymeric network (HPPN) with ultrahigh specific surface area up to 2870 m2 g−1 was synthesized via a one-step ionothermal synthesis method without using templates.
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Dissertations / Theses on the topic "Hierarchical porous network"

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Kolitcheff, Svetan. "Approche multitechnique des phénomènes de diffusion en hydrotraitement de distillats." Thesis, Lyon, 2017. http://www.theses.fr/2017LYSE1033/document.

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Dans l'industrie du raffinage, les procédés de craquage catalytique permettent la production de carburants à partir de coupes pétrolières lourdes, telles que les distillats sous vides (DSV). Pour optimiser ces procédés, un hydrotraitement préalable est nécessaire. Ces dernières années, les travaux conséquents de R&D ont considérablement amélioré l'activité des catalyseurs d'hydrotraitement. Par conséquent, le transfert de matière interne peut devenir limitant, il doit donc être quantifié.Une méthodologie utilisant la chromatographie inverse liquide a été développée afin de caractériser le transfert de matière dans des supports aluminiques de catalyseur. Le système a ensuite été déployé pour caractériser l'influence de l'adsorption, de la température et des précurseurs de la phase active. Dans des alumines mésoporeuses, le régime de diffusion est moléculaire pour des composés saturés allant des coupes essences au DSV. Ainsi, pour différentes alumines, des valeurs de tortuosité ont été estimées et corrélées aux propriétés texturales (porosité, surface spécifique et distribution en taille des pores). Ces relations montrent que les valeurs de tortuosité obtenues ne sont pas en accord avec un solide homogène vis-à-vis des propriétés de transfert de matière. Il y aurait donc une organisation dans la porosité des alumines.Un test catalytique en réacteur agité a aussi été développé pour étudier le transfert de matière en conditions réactives. L'impact de la taille des grains sur l'hydrodésulfuration d'une molécule synthétisée a été caractérisé et modélisé. Ces résultats ont été comparés aux expériences de chromatographie inverse avec un bon accord
The catalytic cracking has an important role in fuels production from heavy oil cuts like vacuum gas oil (VGO). To optimize these processes, a pre-hydrotreatment is required. The amount of work dealt by the research community in the last years has highly contributed to the enhancement of the catalyst’s activity. Therefore, the internal mass transfer can become the limiting step and it must be quantified.A methodology based on inverse liquid chromatography has been developed to characterize the mass transfer within alumina catalyst supports. The experimental setup was also used to study the influence of several parameters into mass transfer properties such as, adsorption, temperature, and active phase precursors. In mesoporous aluminas, the diffusion regime undertaken by saturated compounds, going from gasoline to VGO is the molecular regime. For different alumina supports, tortuosity values were estimated and correlated to the textural properties (porosity, specific surface area and pore size distribution). These results showed that the aluminas can not be considered as homogeneous supports given the estimated mass transfer properties. Thus, we assume that a hierarchical porous structure might be in cause. A catalytic test promoted in a stirred reactor was also developed to study the mass transfer properties under reactive conditions. The impact of the particle grains size into the hydrodesulphurization of a synthetized molecule was characterized and modeled. A good agreement was found between the data obtained using the inverse chromatography experiments and the catalytic tests
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Book chapters on the topic "Hierarchical porous network"

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Beinart, William, and Lotte Hughes. "Environmental Aspects of the Atlantic Slave Trade and Caribbean Plantations." In Environment and Empire. Oxford University Press, 2007. http://dx.doi.org/10.1093/oso/9780199260317.003.0007.

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The Atlantic world became Britain’s main early imperial arena in the seventeenth century. Subsequent to Ireland, North America and the Caribbean were the most important zones of British settler colonialism. At the northern limits of settlement, around the Atlantic coast, the St Lawrence River, the Great Lakes and on the shores of the Hudson Bay, cod fisheries and fur-trading networks were established in competition with the French. This intrusion, while it had profound effects on the indigenous population, was comparatively constrained. Secondly, British settlements were founded in colonial New England from 1620. Expanding agrarian communities, based largely on family farms, displaced Native Americans, while the ports thrived on trade and fisheries. In the hotter zones to the south, both in the Caribbean and on the mainland, slave plantations growing tropical products became central to British expansion. Following in Spanish footsteps, coastal Virginia was occupied in 1607 and various Caribbean islands were captured from the 1620s: Barbados in 1627, and Jamaica in 1655. The Atlantic plantation system was shaped in part by environment and disease. But these forces cannot be explored in isolation from European capital and consumption, or the balance of political power between societies in Europe, Africa, and America. An increase in European consumer demand for relatively few agricultural commodities—sugar, tobacco, cotton, and to a lesser extent ginger, coffee, indigo, arrowroot, nutmeg, and lime—drove plantation production and the slave trade. The possibility of providing these largely non-essential additions for British consumption arose from a ‘constellation’ of factors ‘welded in the seventeenth century’ and surviving until the mid-nineteenth century, aided by trade protectionism. This chapter analyses some of these factors and addresses the problem of how much weight can be given to environmental explanations. Plantations concentrated capital and large numbers of people in profoundly hierarchical institutions that occupied relatively little space in the newly emerging Atlantic order. In contrast to the extractive enterprise of the fur trade, this was a frontier of agricultural production, which required little involvement from indigenous people. On some islands, such as Barbados, Spanish intrusions had already decimated the Native American population before the British arrived; there was little resistance.
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Conference papers on the topic "Hierarchical porous network"

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Islam, Tanveer ul, and Prasanna S. Gandhi. "Controlling Interfacial Flow Instability via Micro Engineered Surfaces Towards Multiscale Channel Fabrication." In ASME 2018 16th International Conference on Nanochannels, Microchannels, and Minichannels. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/icnmm2018-7668.

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Hierarchical branched structures exist in nature in diverse forms, functions and scales stretching from micro to very large sizes. Typically effective as heat and mass transfer networks, ordered hierarchal/ multiscale branched/ tree-like networks could be fabricated by controlling a fluid reshaping process in a device called ‘Multiport Hele-Shaw cell’. Control over the instability by employing micro-modified cell plates, containing ‘source-holes’ as ports, rearranges the fluid into ordered tree-like networks. Reshaping is an outcome of ‘Saffman-Taylor interface instability’ induced by the displacement of a high-viscous fluid by a relatively low-viscous one in the cell. A new configuration of ‘source-holes’, is proposed here to control the instability towards shaping of high-viscous fluid into ordered multiscale treelike layouts. The process is lithography-less method of shaping the fluid spontaneously into 3D layouts in a very short interval of time. Fabricated structures are UV-cured and cast into channel-networks in an elastomer PDMS.
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Journal articles
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