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Multi-stage ammonia production for sorption selective catalytic reduction of NO

Chen ZHANG, Guoliang AN, Liwei WANG, Shaofei WU

Frontiers in Energy 2022, Volume 16, Issue 5, Pages 840-851 doi: 10.1007/s11708-021-0797-1

Abstract: Furthermore, the required mass of sorbent for each type of sorption-SCR is less than half of the mass

Keywords： selective catalytic reduction (SCR) nitrogen oxides (NO_x) ammonia composite sorbent

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New nanostructured sorbents for desulfurization of natural gas

Lifeng WANG, Ralph T. YANG

Frontiers of Chemical Science and Engineering 2014, Volume 8, Issue 1, Pages 8-19 doi: 10.1007/s11705-014-1411-4

Abstract: that are generally lower than that from the large conventional reservoirs, if a superior adsorbent (sorbent

Keywords： desulfurization natural gas desulfurization hydrogen sulfide sorbent amine-silica sorbent

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Preparation and selection of Fe-Cu sorbent for COS removal in syngas

Bowu CHENG, Zhaofei CAO, Yong BAI, Dexiang ZHANG

Frontiers of Chemical Science and Engineering 2010, Volume 4, Issue 4, Pages 441-444 doi: 10.1007/s11705-010-0507-8

Abstract: desulfurization performance, as well as the influence of operating conditions on sulfidation behavior of the sorbentThe result shows that the breakthrough sulfur capacity of the sorbent is as high as 25 g-S/100 g.space velocity of 1000 h , the efficiency of sulfur removal and breakthrough sulfur capacity of the sorbentresult shows that the species and content of additives also affect desulfurization performance of the sorbent

Keywords： sorbent desulfurization COS removal syngas

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Desulfurization performance of iron-manganese-based sorbent for hot coal gas

Xiurong REN, Weiren BAO, Fan LI, Liping CHANG, Kechang XIE

Frontiers of Chemical Science and Engineering 2010, Volume 4, Issue 4, Pages 429-434 doi: 10.1007/s11705-010-0504-y

Abstract: The results show that the suitable addition of manganese oxide in iron-based sorbent can decrease H SFe O and MnO are the initial active components in iron-manganese-based sorbent, and FeO and Fe are activeThe reducibility of sorbent changes with the content of MnO in sorbent.S7F3M sorbent has stable sulfidation performance in three sulfidation-regeneration cycles and no apparentThe sulfidation performance of iron- manganese-based sorbent is also related with its specific surface

Keywords： iron-manganese-based sorbent sulfidation performance regeneration hot coal gas

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Efficient MgO-doped CaO sorbent pellets for high temperature CO

Zhihong Xu, Tao Jiang, Hao Zhang, Yujun Zhao, Xinbin Ma, Shengping Wang

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 3, Pages 698-708 doi: 10.1007/s11705-020-1981-2

Abstract: Novel MgO-doped CaO sorbent pellets were prepared by gel-casting and wet impregnation.The effect of Na and MgO on the structure and CO adsorption performance of CaO sorbent pellets wasMgO-doped CaO sorbent pellets with the diameter range of 0.5 1.5 mm exhibited an excellent capacity forCO adsorption and adsorption rate due to the homogeneous dispersion of MgO in the sorbent pellets andCa2Mg1 sorbent pellets exhibited favorable CO capture capacity (9.49 mmol∙g ), average adsorption rate

Keywords： MgO doping CaO sorbent pellets gel-casting technique CO₂ capture

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Reaction mechanism of arsenic capture by a calcium-based sorbent during the combustion of arsenic-contaminated

Mei Lei, Ziping Dong, Ying Jiang, Philip Longhurst, Xiaoming Wan, Guangdong Zhou

Frontiers of Environmental Science & Engineering 2019, Volume 13, Issue 2, doi: 10.1007/s11783-019-1110-y

Abstract:

Pilot-scale combustion is required to treat arsenic-enriched biomass in China.

CaO addition to arsenic-enriched biomass reduces arsenic emission.

CaO captures arsenic via chemical adsorption to form Ca₃(AsO₄)₂.

Keywords： Arsenic contamination Phytoremediation Emission control Calcium-based sorbent Biomass disposal Pilot-scale

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A thermodynamic study of the removal of HCl and H

Joseph LEE, Bo FENG

Frontiers of Chemical Science and Engineering 2012, Volume 6, Issue 1, Pages 67-83 doi: 10.1007/s11705-011-1162-4

Abstract: Advanced integrated-gasification combined-cycle (IGCC) and integrated-gasification fuel cell (IFGC) systems require high-temperature sorbents that are capable of removing hydrogen chloride and hydrogen sulfide from coal derived gases to very low levels. HCl and H S are highly reactive, corrosive, and toxic gases that must be removed to meet stringent environmental regulations, to protect power generation equipment and to control the emissions of contaminants. The thermodynamic behavior of 13 sorbents for the removal of HCl and H S under various conditions including: initial toxic gas concentration (1–10000 ppm), operating pressure (0.1–11 Mpa), temperature (300 K–1500 K), and the presence of H O were investigated. The correlation between HCl and H S was also examined. Thermodynamic calculations were carried out for the reactions of the 13 sorbents using a FactSage 5.2 software package based on free energy minimization. The sorbents, Na CO , NaHCO , K CO , and CaO are capable of completely removing chlorine at high temperatures (up to ~1240 K) and at high pressures. Water vapor did not have any significant effects on the dechlorination capability of the sorbents. Nine of the sorbents namely; Cu O, Na CO , NaHCO , K CO , CaO, ZnO, MnO, FeO, and PbO, were determined to have great potential as desulfurization sorbents. Cu O and ZnO had the best performance in terms of the optimum operating temperature. The addition of water vapor to the reactant gas produces a slightly detrimental effect on most of the sorbents, but FeO exhibited the worst performance with a reduction in the maximum operating temperature of about 428 K. The dechlorination performance of the alkali sorbents was not affected by the presence of H S in the reactions. However, the desulfurization capability of some sorbents was greatly affected by the presence of HCl. Particularly, the performance of Cu O was significantly reduced when HCl was present, but the performance of FeO improved remarkably. The thermodynamic results gathered are valuable for the developments of better sorbents.

Keywords： syngas cleaning sorbent desulfurization dechlorination

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Technological development and engineering applications of novel steel-concrete composite structures

Jianguo NIE, Jiaji WANG, Shuangke GOU, Yaoyu ZHU, Jiansheng FAN

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 1, Pages 1-14 doi: 10.1007/s11709-019-0514-x

Abstract: community, the development and proposition of novel resource-saving high-performance steel-concrete compositeThis paper summarizes the technical principles and applications of the long-span bi-directional compositeon uplift-restricted and slip-permitted (URSP) connectors, the steel plate concrete composite (SPCC)strengthen technique, and the innovative composite joints.The research results also indicate that the high-performance steel-concrete composite structures have

Keywords： high-performance composite structure bi-directional composite composite transfer uplift-restricted andslip-permitted connectors steel plate concrete composite strengthen

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Deep eutectic solvent inclusions for high- composite dielectric elastomers

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 6, Pages 996-1002 doi: 10.1007/s11705-022-2138-2

Abstract: The as-prepared composite elastomers showed good stretchability and a greatly enhanced dielectric constantbelieved that low-cost, easy-synthesis and environmentally friendly deep eutectic solvents including composite

Keywords： composite materials deep eutectic solvent dielectric elastomer high dielectric constant

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An antibiotic composite electrode for improving the sensitivity of electrochemically active biofilm biosensor

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 8, doi: 10.1007/s11783-022-1518-7

Abstract:

• Antibiotic azithromycin employed in graphite electrode for EAB biosensor.

Keywords： AZM@GP composite electrode EAB-biosensor Water quality early-warning

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Structural optimization of filament wound composite pipes

Roham RAFIEE; Reza SHAHZADI; Hossein SPERESP

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 8, Pages 1056-1069 doi: 10.1007/s11709-022-0868-3

Abstract: An optimization procedure is developed for obtaining optimal structural design of filament wound compositeThen, proper computational tools are developed for predicting the structural properties of the composite

Keywords： composite pipes optimization experimental validation computational modeling filament winding

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Progressive failure analysis of notched composite plate by utilizing macro mechanics approach

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 3, Pages 623-642 doi: 10.1007/s11709-021-0726-8

Abstract: study, gradual and sudden reduction methods were combined to simulate a progressive failure in notched compositecomputational cost and is also capable of simultaneously predicting the first and last ply failures (LPFs) in compositethe first ply failure (FPF), LPF, and dominant failure modes of carbon/epoxy and glass/epoxy notched compositeeffects of mechanical properties and different stacking sequences on the propagation of damage in notched compositeit is revealed that the proposed method can accurately simulate the failure propagation in notched composite

Keywords： progressive failure notched composite plate Hashin failure criterion macro mechanics approach finite

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Bending and rotational behaviour of semi-continuous composite beams

WANG Jingfeng, LI Guoqiang

Frontiers of Structural and Civil Engineering 2008, Volume 2, Issue 2, Pages 116-122 doi: 10.1007/s11709-008-0015-9

Abstract: Stresses and deflections were measured in various semi-continuous composite beams.The bending and rotational capacities of the composite connections were measured in terms of beam curvaturesand deflections by using two full-scale semi-rigid composite frames with monotonic loadings.The effect of semi-rigid connections on the performance of composite beams with various loadings wasor continuous composite beams.

Keywords： rotational effective deflection calculation semi-continuous composite full-scale semi-rigid

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Experimental study on flexural behavior of ECC/RC composite beams with U-shaped ECC permanent formwork

Zhi QIAO, Zuanfeng PAN, Weichen XUE, Shaoping MENG

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 5, Pages 1271-1287 doi: 10.1007/s11709-019-0556-0

Abstract: To enhance the durability of a reinforced concrete structure, engineered cementitious composite (ECC)This paper presents a new means to address this issue by introducing a composite beam with a U-shapedThe flexural performance of the ECC/RC composite beam has been investigated experimentally with eightAccording to the test results, the failure of a composite beam with a U-shaped ECC formwork is initiatedUnder the same reinforcement configurations, ECC/RC composite beams exhibit increases in flexural performance

Keywords： engineered cementitious composite (ECC) durability ECC/RC composite beam permanent formwork flexural

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Bending performance of composite bridge deck with T-shaped ribs

Qingtian SU, Changyuan DAI, Xu JIANG

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 4, Pages 990-997 doi: 10.1007/s11709-019-0532-8

Abstract: This paper proposes a new type of steel-concrete composite deck, which is composed of orthotropic steelCompared with conventional OSD system, this new type of composite bridge deck can also improve fatigueConsidering that this type of composite deck is not yet applied in practical engineering and its mechanicalThe test results showed that the plastic performance of this kind of composite bridge deck was satisfying

Keywords： bending performance composite bridge deck T-shaped steel ribs