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Preparation of Nanoporous Carbonaceous Promoters for Enhanced CO2 Absorption in Tertiary Amines Review

Masood S. Alivand, Omid Mazaheri, Yue Wu, Geoffrey W. Stevens, Colin A. Scholes, Kathryn A. Mumford

Engineering 2020, Volume 6, Issue 12,   Pages 1381-1394 doi: 10.1016/j.eng.2020.05.004

Abstract: Here, a series of novel nanoporous carbonaceous promoters (NCPs) with different properties were synthesized, characterized, and used as rate promoters for CO2 absorption in aqueous N,NThe results revealed that among microporous (GC) and mesoporous (GS) carbonaceous structures functionalized

Keywords： CO2 absorption Nanofluid     N     N-diethylethanolamine     Nanoporous carbonaceous promoters     Polyamine    

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Preparation of adsorptive nanoporous membrane using powder activated carbon: Isotherm and thermodynamic

Majid Peyravi

Frontiers of Chemical Science and Engineering 2020, Volume 14, Issue 4,   Pages 673-687 doi: 10.1007/s11705-019-1800-9

Abstract: Adsorptive polyethesulfone (PES) membranes were prepared by intercalation of powder activated carbon (PAC) with and without functionalization. Accordingly, PAC was aminated with 1,5-diamino-2-methylpentane, and the physicochemical properties of the functionalized PAC were analyzed. Intercalation of PAC within the PES scaffold changed the porosity and mean pore size of the aminated membrane (AC-NH ) from 52.6% to 92.5% and from 22.6 nm to 3.5 nm, respectively. The effect of temperature on the performance of the modified membranes was monitored by the flux and chemical oxygen demand (COD) removal of leachate. At ambient temperature, the COD removal of the neat, AC-containing, and AC-NH membranes was 47%, 52%, and 58.5%, respectively. A similar increment was obtained for the membrane flux, which was due to the synergistic effect of the high porosity and large number of hydrophilic functional groups. The experimental leachate adsorption data were analyzed by Langmuir, Freundlich, and Dubinin- Radushkevich isotherm models. For all membranes, the significant thermodynamic parameters ( , , and ) were calculated and compared. The isosteric heat of adsorption was lower than 80 kJ∙mol , indicating that the interaction between the membranes and the leachate is mainly physical, involving weak van der Waals forces.

Keywords： amine functionality     nanoporous membrane     adsorption isotherm     thermodynamic parameters     landfill leachate    

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Synthesis of magnetic carbonaceous acid derived from waste garlic peel for biodiesel production via esterification

Hewei YU, Jinke WU, Wei WEI, Xingyu ZHANG, Changzai REN, Yaoqi DONG, Shen CHENG

Frontiers in Energy 2023, Volume 17, Issue 1,   Pages 176-187 doi: 10.1007/s11708-022-0836-6

Abstract: First, a novel magnetic carbonaceous catalyst was synthesized from waste garlic peel (GP) via in situ

Keywords： garlic peel (GP)     magnetic carbonaceous acid     esterification     biodiesel    

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nanofluids composed of deep eutectic solvents and metal-modified MCM-41 particles as multifunctional promoters

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 11,   Pages 1776-1787 doi: 10.1007/s11705-023-2314-z

Abstract: by dispersing different metal-modified MCM-41 particles in deep eutectic solvent as multifunctional promoters

Keywords： fuel oil desulfurization     nanofluids     catalytic ozonation    

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Largely reduced cross-plane thermal conductivity of nanoporous In

Dongchao XU, Quan WANG, Xuewang WU, Jie ZHU, Hongbo ZHAO, Bo XIAO, Xiaojia WANG, Xiaoliang WANG, Qing HAO

Frontiers in Energy 2018, Volume 12, Issue 1,   Pages 127-136 doi: 10.1007/s11708-018-0519-5

Abstract: In recent year, nanoporous Si thin films have been widely studied for their potential applications inAlong this line, a high thermoelectric figure of merit (ZT) is also anticipated for other nanoporousNumerous thermoelectric studies have been carried out on Si-based nanoporous thin films, whereas cost-effectiveIn this work, the cross-plane thermal conductivities of nanoporous In Ga N thin films with varied porousIn contrast to previous studies using dry-etched nanopores with amorphous pore edges, the measured nanoporous

Keywords： nanoporous film     thermoelectrics     phonon     mean free path     diffusive scattering    

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Effect of carbon deposition over carbonaceous catalysts on CH

Yongfa ZHANG, Meng ZHANG, Guojie ZHANG, Huirong ZHANG

Frontiers of Chemical Science and Engineering 2010, Volume 4, Issue 4,   Pages 481-485 doi: 10.1007/s11705-010-0523-8

Abstract: It was found that the carbonaceous catalyst is an efficient catalyst in methane decomposition and CH

Keywords： carbon deposition     carbonaceous catalyst     CH4-CO2 reforming    

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Reactivity of Pyrogenic Carbonaceous Matter (PCM) in mediating environmental reactions: Current knowledge

Wenqing Xu, Mark L. Segall, Zhao Li

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 5, doi: 10.1007/s11783-020-1265-6

Abstract: Abstract • Pyrogenic Carbonaceous Matter (PCM) promote both chemical and microbial synergies. • DiscussionPyrogenic Carbonaceous matter (PCM; e.g., black carbon, biochar, and activated carbon) are solid residuesMoreover, the knowledge gained in these studies could inform the design of a new generation of reactive carbonaceous

Keywords： pyrogenic carbonaceous matter     Conjugated microporous polymer     remediation     Biochar     Hydrolysis     Pollutant    

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The catalytic effect of both oxygen-bearing functional group and ash in carbonaceous catalyst on CH 4

Weidong ZHANG, Yongfa ZHANG,

Frontiers of Chemical Science and Engineering 2010, Volume 4, Issue 2,   Pages 147-152 doi: 10.1007/s11705-009-0242-1

Abstract: A kind of new catalyst—carbonaceous catalyst—for CH-CO reformation has been developed inIt has been found that the carbonaceous catalyst is an efficient catalyst on CO-CH reforming.With the decrease of oxygen-bearing functional group, the catalytic activity of carbonaceous catalyst; the ash components in carbonaceous catalyst also have an important influence on the CO-CH reformingCaO can catalyze the gasification between carbonaceous catalyst and CO; AlO and MgO inhibit the CO-CH

Keywords： oxygen-bearing functional     carboxyl     phenolic hydroxyl     CH-CO reformation     CO-CH reforming    

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Emission factors of gaseous carbonaceous species from residential combustion of coal and crop residue

Qin WANG, Chunmei GENG, Sihua LU, Wentai CHEN, Min SHAO

Frontiers of Environmental Science & Engineering 2013, Volume 7, Issue 1,   Pages 66-76 doi: 10.1007/s11783-012-0428-5

Abstract: Experiments were performed to measure the emission factors ( s) of gaseous carbonaceous species, suchimproved stove design to allow higher combustion efficiency would be beneficial for reducing emissions of carbonaceous

Keywords： residential combustion     coal     crop residue briquette     emission factors     gaseous carbonaceous species    

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Progress in the Physisorption Characterization of Nanoporous Gas Storage Materials Review

Katie A. Cychosz,Matthias Thommes

Engineering 2018, Volume 4, Issue 4,   Pages 559-566 doi: 10.1016/j.eng.2018.06.001

Abstract:

Assessing the adsorption properties of nanoporous materials and determining their structural characterizationhave been achieved both in the knowledge of the adsorption and phase behavior of fluids in ordered nanoporousfew important and central features of the underlying adsorption mechanisms of fluids in a variety of nanoporous

Keywords： Adsorption     Characterization     High-pressure adsorption     Nanoporous materials    

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Transport in Nanoporous Media

Weiyao Zhu,Bin Pan,Zhen Chen,Wengang Bu,Qipeng Ma,Kai Liu,Ming Yue

Engineering 2024, Volume 32, Issue 1,   Pages 139-152 doi: 10.1016/j.eng.2023.05.014

Abstract:

Fluid flow at nanoscale is closely related to many areas in nature and technology, e.g., unconventional hydrocarbon recovery, carbon dioxide geo-storage, underground hydrocarbon storage, fuel cells, ocean desalination and biomedicine. At nanoscale, interfacial forces dominate over bulk forces, and nonlinear effects are important, which significantly deviate from conventional theory. During the past decades, a series of experiments, theory and simulations have been performed to investigate fluid flow at nanoscale, which has advanced our fundamental knowledge of this topic. However, a critical review is still lacking, which has seriously limited the basic understanding of this area. Therefore herein, we systematically review experimental, theoretical and simulation works on single- and multi- phases fluid flow at nanoscale. We also clearly point out the current research gaps and future outlook. These insights will promote the significant development of nonlinear flow physics at nanoscale and will provide crucial guidance on the relevant areas.

Keywords： Transport in nanoporous media     Multi-phase fluid dynamics     Nonlinear flow mechanisms     Nonlinear flow conservation    

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Building a Highly Stable Ultrathin Nanoporous Layer Assisted by Glucose for Desalination Article

Yanqiu Zhang, Fan Yang, Hongguang Sun, Yongping Bai, Songwei Li, Lu Shao

Engineering 2022, Volume 16, Issue 9,   Pages 247-255 doi: 10.1016/j.eng.2020.06.033

Abstract:

Although nanoporous membranes are of great interest in desalination, it is still challenging to constructhighly permeable nanoporous membranes with excellent rejections for an efficient desalination processIn this work, highly permeable nanoporous membranes were built from renewable resources, assisted by

Keywords： Nanoporous membrane     Renewable resources     Nanofiltration     Desalination     Glucose    

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Interaction of carbonaceous nanomaterials with wastewater biomass

Yu YANG,Zhicheng YU,Takayuki NOSAKA,Kyle DOUDRICK,Kiril HRISTOVSKI,Pierre HERCKES,Paul WESTERHOFF

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 5,   Pages 823-831 doi: 10.1007/s11783-015-0787-9

Abstract: Increasing production and use of carbonaceous nanomaterials (NMs) will increase their release to theThe data presented in this study for carbonaceous NM removal from wastewater provides quantitative information

Keywords： multi-walled carbon nanotubes     graphene oxide     graphene     removal     wastewater biomass    

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Overcoming oral insulin delivery barriers: application of cell penetrating peptide and silica-based nanoporous

Huining HE, Junxiao YE, Jianyong SHENG, Jianxin WANG, Yongzhuo HUANG, Guanyi CHEN, Jingkang WANG, Victor C YANG

Frontiers of Chemical Science and Engineering 2013, Volume 7, Issue 1,   Pages 9-19 doi: 10.1007/s11705-013-1306-9

Abstract: Oral insulin delivery has received the most attention in insulin formulations due to its high patient compliance and, more importantly, to its potential to mimic the physiologic insulin secretion seen in non-diabetic individuals. However, oral insulin delivery has two major limitations: the enzymatic barrier that leads to rapid insulin degradation, and the mucosal barrier that limits insulin’s bioavailability. Several approaches have been actively pursued to circumvent the enzyme barrier, with some of them receiving promising results. Yet, thus far there has been no major success in overcoming the mucosal barrier, which is the main cause in undercutting insulin’s oral bioavailability. In this review of our group’s research, an innovative silica-based, mucoadhesive oral insulin formulation with encapsulated-insulin/cell penetrating peptide (CPP) to overcome both enzyme and mucosal barriers is discussed, and the preliminary and convincing results to confirm the plausibility of this oral insulin delivery system are reviewed. In vitro studies demonstrated that the CPP-insulin conjugates could facilitate cellular uptake of insulin while keeping insulin’s biologic functions intact. It was also confirmed that low molecular weight protamine (LMWP) behaves like a CPP peptide, with a cell translocation potency equivalent to that of the widely studied TAT. The mucoadhesive properties of the produced silica-chitosan composites could be controlled by varying both the pH and composition; the composite consisting of chitosan (25 wt-%) and silica (75 wt-%) exhibited the greatest mucoadhesion at gastric pH. Furthermore, drug release from the composite network could also be regulated by altering the chitosan content. Overall, the universal applicability of those technologies could lead to development of a generic platform for oral delivery of many other bioactive compounds, especially for peptide or protein drugs which inevitably encounter the poor bioavailability issues.

Keywords： insulin     cell penetrating peptide     mucoadhesive composites     oral delivery    

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Effects of Potassium and Manganese Promoters on Nitrogen-Doped Carbon Nanotube-Supported Iron Catalysts Article

Praewpilin Kangvansura, Ly May Chew, Chanapa Kongmark, Phatchada Santawaja, Holger Ruland, Wei Xia, Hans Schulz, Attera Worayingyong, Martin Muhler

Engineering 2017, Volume 3, Issue 3,   Pages 385-392 doi: 10.1016/J.ENG.2017.03.013

Abstract:

Nitrogen-doped carbon nanotubes (NCNTs) were used as a support for iron (Fe) nanoparticles applied in carbon dioxide (CO2) hydrogenation at 633 K and 25 bar (1 bar = 105 Pa). The Fe/NCNT catalyst promoted with both potassium (K) and manganese (Mn) showed high performance in CO2 hydrogenation, reaching 34.9% conversion with a gas hourly space velocity (GHSV) of 3.1 L·(g·h)−1. Product selectivities were high for olefin products and low for short-chain alkanes for the K-promoted catalysts. When Fe/NCNT catalyst was promoted with both K and Mn, the catalytic activity was stable for 60 h of reaction time. The structural effect of the Mn promoter was demonstrated by X-ray diffraction (XRD), temperature-programmed reduction (TPR) with molecular hydrogen (H2), and in situ X-ray absorption near-edge structure (XANES) analysis. The Mn promoter stabilized wüstite (FeO) as an intermediate and lowered the TPR onset temperature. Catalytic ammonia (NH3) decomposition was used as an additional probe reaction for characterizing the promoter effects. The Fe/NCNT catalyst promoted with both K and Mn had the highest catalytic activity, and the Mn-promoted Fe/NCNT catalysts had the highest thermal stability under reducing conditions.

Keywords： CO2 hydrogenation     Iron catalyst     Nitrogen-doped carbon nanotubes     Manganese promoter     Potassium promoter    

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Title Author Date Type Operation

Preparation of Nanoporous Carbonaceous Promoters for Enhanced CO2 Absorption in Tertiary Amines

Masood S. Alivand, Omid Mazaheri, Yue Wu, Geoffrey W. Stevens, Colin A. Scholes, Kathryn A. Mumford

Journal Article

Preparation of adsorptive nanoporous membrane using powder activated carbon: Isotherm and thermodynamic

Majid Peyravi

Journal Article

Synthesis of magnetic carbonaceous acid derived from waste garlic peel for biodiesel production via esterification

Hewei YU, Jinke WU, Wei WEI, Xingyu ZHANG, Changzai REN, Yaoqi DONG, Shen CHENG

Journal Article

nanofluids composed of deep eutectic solvents and metal-modified MCM-41 particles as multifunctional promoters

Journal Article

Largely reduced cross-plane thermal conductivity of nanoporous In

Dongchao XU, Quan WANG, Xuewang WU, Jie ZHU, Hongbo ZHAO, Bo XIAO, Xiaojia WANG, Xiaoliang WANG, Qing HAO

Journal Article

Effect of carbon deposition over carbonaceous catalysts on CH

Yongfa ZHANG, Meng ZHANG, Guojie ZHANG, Huirong ZHANG

Journal Article

Reactivity of Pyrogenic Carbonaceous Matter (PCM) in mediating environmental reactions: Current knowledge

Wenqing Xu, Mark L. Segall, Zhao Li

Journal Article

The catalytic effect of both oxygen-bearing functional group and ash in carbonaceous catalyst on CH 4

Weidong ZHANG, Yongfa ZHANG,

Journal Article

Emission factors of gaseous carbonaceous species from residential combustion of coal and crop residue

Qin WANG, Chunmei GENG, Sihua LU, Wentai CHEN, Min SHAO

Journal Article

Progress in the Physisorption Characterization of Nanoporous Gas Storage Materials

Katie A. Cychosz,Matthias Thommes

Journal Article

Transport in Nanoporous Media

Weiyao Zhu,Bin Pan,Zhen Chen,Wengang Bu,Qipeng Ma,Kai Liu,Ming Yue

Journal Article

Building a Highly Stable Ultrathin Nanoporous Layer Assisted by Glucose for Desalination

Yanqiu Zhang, Fan Yang, Hongguang Sun, Yongping Bai, Songwei Li, Lu Shao

Journal Article

Interaction of carbonaceous nanomaterials with wastewater biomass

Yu YANG,Zhicheng YU,Takayuki NOSAKA,Kyle DOUDRICK,Kiril HRISTOVSKI,Pierre HERCKES,Paul WESTERHOFF

Journal Article

Overcoming oral insulin delivery barriers: application of cell penetrating peptide and silica-based nanoporous

Huining HE, Junxiao YE, Jianyong SHENG, Jianxin WANG, Yongzhuo HUANG, Guanyi CHEN, Jingkang WANG, Victor C YANG

Journal Article

Effects of Potassium and Manganese Promoters on Nitrogen-Doped Carbon Nanotube-Supported Iron Catalysts

Praewpilin Kangvansura, Ly May Chew, Chanapa Kongmark, Phatchada Santawaja, Holger Ruland, Wei Xia, Hans Schulz, Attera Worayingyong, Martin Muhler

Journal Article