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Thermodynamic analysis of reaction pathways and equilibrium yields for catalytic pyrolysis of naphtha

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 12,   Pages 1700-1712 doi: 10.1007/s11705-022-2207-6

Abstract: Herein, for a better catalyst design and operation parameters optimization, the reaction pathways and equilibriumIn addition, the equilibrium yield of light olefins increased with increasing the chain length, and the

Keywords: naphtha     catalytic pyrolysis     reaction pathway     equilibrium yield    

Measurement and correlation of the solid-liquid equilibrium of 2-(

Yanhong SUN, Zhiyong LI, Chuang XIE, Wei CHEN, Cui ZHANG

Frontiers of Chemical Science and Engineering 2013, Volume 7, Issue 1,   Pages 110-115 doi: 10.1007/s11705-013-1316-7

Abstract: The binary solid-liquid equilibrium (SLE) of both compounds were predicted by integrated computer aided

Keywords: solid-liquid equilibrium (SLE)     eutectic     integrated computer aided system (ICAS)     TOPEM     correlation    

Brown marine algae turbinaria conoides as biosorbent for Malachite green removal: Equilibrium and kinetic

R. RAJESH KANNAN, M. RAJASIMMAN, N. RAJAMOHAN, B. SIVAPRAKASH,

Frontiers of Environmental Science & Engineering 2010, Volume 4, Issue 1,   Pages 116-122 doi: 10.1007/s11783-010-0006-7

Abstract: Equilibrium studies were carried out to test the validity of the Langmuir ( = 66.6 mg/g and =

Keywords: Malachite green (MG)     Turbinaria conoides     marine algae     equilibrium studies     biosorption    

Non-equilibrium model for catalytic distillation process

WANG Feng, ZHAO Ning, LI Junping, XIAO Fukui, WEI Wei, SUN Yuhan

Frontiers of Chemical Science and Engineering 2008, Volume 2, Issue 4,   Pages 379-384 doi: 10.1007/s11705-008-0071-7

Abstract: A new improved tri-diagonal method was developed for the non-equilibrium stage model of the catalyticThe non-equilibrium stage model was introduced for the catalytic distillation process of the dimethyl

into nitrogen and sulfur co-doped carbon nanotubes for effective desulfurization of liquid phases: Equilibrium

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 5, doi: 10.1007/s11783-021-1397-3

Abstract:

• Synthesis of NS-CNTS is used in a high desulfurization performance.

Keywords: Dibenzothiophene (DBT)     Tertiary methyl mercaptan     Adsorption     Carbon nano tube (CNT)     Desulfurization     Doping    

Removal of Rhodamine B from aqueous solutions and wastewater by walnut shells: kinetics, equilibrium

Jasmin Shah, M. Rasul Jan, Attaul Haq, Younas Khan

Frontiers of Chemical Science and Engineering 2013, Volume 7, Issue 4,   Pages 428-436 doi: 10.1007/s11705-013-1358-x

Abstract: An adsorption study of Rhodamine B (RB) dye from aqueous solutions was carried out using walnut shells pretreated by different methods. In addition to the effects of the pretreatment, the effects of various parameters like pH, adsorbent dose, contact time, initial dye concentration and temperature on the adsorption of RB was studied. The adsorption process was highly pH dependent and a maximum adsorption was achieved at pH 3.0. The best fit for the rates of dye adsorption was a pseudo-second-order kinetic model with good correlation coefficients ( >0.99). Langmuir isotherms were used to determine that the maximum loading capacity of the different walnut shells and the RB capacities ranged from 1.451–2.292 mg·g . The dye adsorption was also evaluated thermodynamically. Positive standard enthalpy (? °) values were obtained indicating that the RB adsorption process is endothermic as well as ? ° and ? ° values showed that adsorption process is spontaneous with an increased randomness at the solid-liquid interface. Desorption studies were carried out to explore the feasibility of regenerating the used walnut shells and it was found that 97.71%–99.17% of the retained RB was recovered with 0.1 mol?L NaOH solution. The walnut shells were also successfully used to remove RB from industrial effluents.

Keywords: Rhodamine B     walnut shell adsorption     kinetics     isotherms     regeneration    

Inspection System of Carbonate Equilibrium for Groundwater

Liu Jiangang,Zheng Kexun,Fu Weining,Wu Shunhua

Strategic Study of CAE 2003, Volume 5, Issue 9,   Pages 61-64

Abstract: So features of carbonate equilibrium in carbonate rock depend on component of calcite.

Keywords: carbonate rock     groundwater     carbonate equilibrium     pH value    

Phase equilibrium of the ternary system of NH 4 Cl—CaCl 2 —H 2 O at 50°C

Xia LI, Junsheng YUAN, Zhiyong JI, Jianxin CHEN,

Frontiers of Chemical Science and Engineering 2010, Volume 4, Issue 1,   Pages 75-77 doi: 10.1007/s11705-009-0296-0

Abstract: The equilibrium data on the ternary system of NHCl—CaCl—HO at 50°C were investigatedA new hydration double salt (2NHCl·CaCl·3HO) was found in the ternary equilibrium system for

Statics of levitated vehicle model with hybrid magnets

Desheng LI, Zhiyuan LU, Tianwu DONG

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 1,   Pages 35-39 doi: 10.1007/s11465-009-0002-4

Abstract: characteristics of the interference forces in three different spatial directions are studied, and self-adjusting equilibrium

Keywords: magnetic levitation     permanent magnet     modeling     equilibrium    

Biosorption of Cr(III) from aqueous solution by freeze-dried activated sludge: Equilibrium, kinetic and

Qian YAO, Hua ZHANG, Jun WU, Liming SHAO, Pinjing HE,

Frontiers of Environmental Science & Engineering 2010, Volume 4, Issue 3,   Pages 286-294 doi: 10.1007/s11783-010-0025-4

Abstract: Batch biosorption experiments were conducted to remove Cr(III) from aqueous solutions using activated sludge from a sewage treatment plant. An investigation was conducted on the effects of the initial pH, contact time, temperature, and initial Cr(III) concentration in the biosorption process. The results revealed that the activated sludge exhibited the highest Cr(III) uptake capacity (120 mg·g) at 45°C, initial pH of 4, and initial Cr(III) concentration of 100 mg·L. The biosorption results obtained at various temperatures showed that the biosorption pattern accurately followed the Langmuir model. The calculated thermodynamic parameters, Δ (−0.8– −4.58 kJ·mol), Δ (15.6–44.4 kJ·mol), and Δ (0.06–0.15 kJ·mol·K) clearly indicated that the biosorption process was feasible, spontaneous, endothermic, and physical. The pseudo first-order and second-order kinetic models were adopted to describe the experimental data, which revealed that the Cr(III) biosorption process conformed to the second-order rate expression and the biosorption rate constants decreased with increasing Cr(III) concentration. The analysis of the values of biosorption activation energy ( = −7 kJ·mol) and the intra-particle diffusion model demonstrated that Cr(III) biosorption was film-diffusion-controlled.

Keywords: activated sludge     biosorption     chromium     film diffusion     kinetics     thermodynamics    

Stability analysis of layered slopes in unsaturated soils

Guangyu DAI; Fei ZHANG; Yuke WANG

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 3,   Pages 378-387 doi: 10.1007/s11709-022-0808-2

Abstract: study presents stability analyses of layered soil slopes in unsaturated conditions and uses a limit equilibrium

Keywords: slope stability     suction stress     unsaturated soil     layered slope     limit equilibrium    

Molecular dynamics simulation of diffusivity

LIU Juanfang, ZENG Danling, LI Qin, GAO Hong

Frontiers in Energy 2008, Volume 2, Issue 3,   Pages 359-362 doi: 10.1007/s11708-008-0039-9

Abstract: Equilibrium molecular dynamics simulation was performed on water to calculate its diffusivity by adopting

Keywords: diffusivity     Equilibrium molecular     influence     potential    

Construction and Application of Mineral Flotation Adsorption Equilibrium Model: Accurately Analyze Ions

Gao Ya, Fu Xinzhuang, Han Haisheng, Wang Li, Yue Tong, Sun Wei

Strategic Study of CAE 2023, Volume 25, Issue 6,   Pages 248-258 doi: 10.15302/J-SSCAE-2023.07.020

Abstract:

The mineral flotation adsorption equilibrium model is a mathematicalmodel to accurately describe ions/reagents adsorption equilibrium involved in mineral flotation.the traditional flotation theory on the surface-active sites, and the adsorption capacity and equilibriumThis study discussed in detail the construction principle of the mineral flotation adsorption equilibriumThe constants containing site density Ns, protonation / deprotonation equilibrium constants Kt1/

Keywords: mineral processing     flotation mechanism     mineral flotation adsorption equilibrium model     mineral floatability    

Thermally developing forced convection and the corresponding thermal stresses in a porous plate channel

YANG Xiao, LIU Xuemei

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 1,   Pages 57-61 doi: 10.1007/s11465-007-0009-7

Abstract: in the direction of the fluid flow, the thermally developing forced convection of the local thermal equilibrium

Keywords: semi-infinite saturated     direction     interaction     skeleton     thermal equilibrium    

The relevance of James Lovelock’s research and philosophy to environmental science and academia

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 3, doi: 10.1007/s11783-023-1639-7

Abstract: hypothesis, which views the Earth as a living integrated and interconnected self-regulating system whose equilibrium

Keywords: Academic independence     Climate change     Electron capture detector     Environmental equilibrium     Global warming    

Title Author Date Type Operation

Thermodynamic analysis of reaction pathways and equilibrium yields for catalytic pyrolysis of naphtha

Journal Article

Measurement and correlation of the solid-liquid equilibrium of 2-(

Yanhong SUN, Zhiyong LI, Chuang XIE, Wei CHEN, Cui ZHANG

Journal Article

Brown marine algae turbinaria conoides as biosorbent for Malachite green removal: Equilibrium and kinetic

R. RAJESH KANNAN, M. RAJASIMMAN, N. RAJAMOHAN, B. SIVAPRAKASH,

Journal Article

Non-equilibrium model for catalytic distillation process

WANG Feng, ZHAO Ning, LI Junping, XIAO Fukui, WEI Wei, SUN Yuhan

Journal Article

into nitrogen and sulfur co-doped carbon nanotubes for effective desulfurization of liquid phases: Equilibrium

Journal Article

Removal of Rhodamine B from aqueous solutions and wastewater by walnut shells: kinetics, equilibrium

Jasmin Shah, M. Rasul Jan, Attaul Haq, Younas Khan

Journal Article

Inspection System of Carbonate Equilibrium for Groundwater

Liu Jiangang,Zheng Kexun,Fu Weining,Wu Shunhua

Journal Article

Phase equilibrium of the ternary system of NH 4 Cl—CaCl 2 —H 2 O at 50°C

Xia LI, Junsheng YUAN, Zhiyong JI, Jianxin CHEN,

Journal Article

Statics of levitated vehicle model with hybrid magnets

Desheng LI, Zhiyuan LU, Tianwu DONG

Journal Article

Biosorption of Cr(III) from aqueous solution by freeze-dried activated sludge: Equilibrium, kinetic and

Qian YAO, Hua ZHANG, Jun WU, Liming SHAO, Pinjing HE,

Journal Article

Stability analysis of layered slopes in unsaturated soils

Guangyu DAI; Fei ZHANG; Yuke WANG

Journal Article

Molecular dynamics simulation of diffusivity

LIU Juanfang, ZENG Danling, LI Qin, GAO Hong

Journal Article

Construction and Application of Mineral Flotation Adsorption Equilibrium Model: Accurately Analyze Ions

Gao Ya, Fu Xinzhuang, Han Haisheng, Wang Li, Yue Tong, Sun Wei

Journal Article

Thermally developing forced convection and the corresponding thermal stresses in a porous plate channel

YANG Xiao, LIU Xuemei

Journal Article

The relevance of James Lovelock’s research and philosophy to environmental science and academia

Journal Article