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You searched for: Journal Industrial & Engineering Chemistry Research Remove constraint Journal: Industrial & Engineering Chemistry Research Publication Year 2014 Remove constraint Publication Year: 2014 Source 2014 v.53 no.1 Remove constraint Source: 2014 v.53 no.1
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1. A Numerical Study on Liquid Mixing in Multichannel Micromixers

Author:
Su, Yuanhai; Lautenschleger, Anna; Chen, Guangwen; Kenig, Eugeny Y.
Source:
Industrial & Engineering Chemistry Research 2014 v.53 no.1 pp. 390-401
ISSN:
1520-5045
Subject:
engineering; liquids; mixing; specific energy; statistical analysis
Abstract:
... Single microchannels and their arrangements for liquid mixing are investigated numerically. A smaller lateral inlet diameter and the zigzag form of the channels are found to be beneficial for the mixing performance in microchannels. Under proper operational conditions, the mixing process can be almost completed. Furthermore, some constructal distributor designs for the arrangement of microchannels ...
DOI:
10.1021/ie401924x

2. A Review of the Absorption and Desorption Processes of Carbon Dioxide in Water Systems

Author:
Elhajj, Jessy; Al-Hindi, Mahmoud; Azizi, Fouad
Source:
Industrial & Engineering Chemistry Research 2014 v.53 no.1 pp. 2-22
ISSN:
1520-5045
Subject:
absorption; additives; carbon dioxide; chemical reactions; desorption; engineering; geometry; mass transfer; models; solubility; temperature; water salinity
Abstract:
... This article is a comprehensive review of the literature dealing with the transfer of carbon dioxide to water where no chemical reactions are taking place. It reviews the studies related to the absorption and desorption kinetics, mass-transfer rates, effect of the contactor geometry, effect of water salinity, and the effects of temperature and pressure on the process in conventional reactors or th ...
DOI:
10.1021/ie403245p

3. Axial Variation of Wetting Efficiency and Liquid–Solid Mass Transfer in Long Trickle Bed Columns

Author:
du Toit, Elizabeth L.; Joubert, Rita; Saayman, Francois; Nicol, Willie
Source:
Industrial & Engineering Chemistry Research 2014 v.53 no.1 pp. 494-497
ISSN:
1520-5045
Subject:
electrochemistry; engineering; hydrodynamics; liquids; mass transfer
Abstract:
... Wetting efficiency and the solid liquid mass transfer coefficient was measured separately and simultaneously using the electrochemical cell technique while varying the superficial liquid velocity and hydrodynamic state of a column by using different prewetting procedures. The wetting efficiency in columns with an aspect ratio (distance from distributor divided by column diameter) of up to 33, decr ...
DOI:
10.1021/ie402286v

4. Boundary Condition Effects on Laminar Natural Convection of Power-Law Fluids in a Square Enclosure Heated from below with Differentially Heated Horizontal Walls

Author:
Turan, Osman; Fotso-Choupe, Frank; Lai, Jiawei; Poole, Robert J.; Chakraborty, Nilanjan
Source:
Industrial & Engineering Chemistry Research 2014 v.53 no.1 pp. 456-473
ISSN:
1520-5045
Subject:
chemistry; convection; engineering; temperature
Abstract:
... Two-dimensional steady-state laminar natural convection of power-law fluids in square enclosures with differentially heated horizontal walls (heated from below) subjected to constant wall temperature (CWT) and constant wall heat flux (CHWF) boundary conditions has been analyzed in detail based on computational simulations and a detailed scaling analysis. The effects of power-law exponent n ranging ...
DOI:
10.1021/ie4023447

5. Catalytic Oxidation of 2,7-Dihydroxynaphthalene

Author:
Bilici, Ali; Doğan, Fatih; Kaya, İsmet
Source:
Industrial & Engineering Chemistry Research 2014 v.53 no.1 pp. 104-109
ISSN:
1520-5045
Subject:
Fourier transform infrared spectroscopy; catalysts; electrochemistry; engineering; fluorescence; molecular weight; nuclear magnetic resonance spectroscopy; oxidation; polymerization; polymers; ultraviolet-visible spectroscopy
Abstract:
... Two polymer–metal complexes were used for catalytic oxidative polymerization of 2,7-dihydroxynaphthalene (DHN) with the aim of exploiting new and potent catalysts. The structure of the resulting poly(2,7-dihydroxynaphthalene) (PDHN) was confirmed by various spectral techniques: UV–vis, FT-IR, ¹H NMR, ¹³C NMR, ¹H–¹H COSY, and ¹H–¹³C HSQC. The 3 and 6 positions of the DHN ring were suggested as main ...
DOI:
10.1021/ie401735j

6. Cerium Oxide Coating of Titanium Dioxide Pigment to Decrease Its Photocatalytic Activity

Author:
Gao, Han; Qiao, Bing; Wang, Ting-Jie; Wang, Dezheng; Jin, Yong
Source:
Industrial & Engineering Chemistry Research 2014 v.53 no.1 pp. 189-197
ISSN:
1520-5045
Subject:
aluminum oxide; ceric oxide; cerium; coatings; electrons; engineering; photocatalysis; pigments; silica; silicon; titanium dioxide; ultraviolet radiation
Abstract:
... The use of cerium oxide coating of titanium dioxide pigments to decrease photocatalytic activity was studied. A large decrease in the photocatalytic activity of titanium dioxide particles coated with cerium oxide was obtained even with a tiny coating amount of 0.2 wt %, and these particles were more stable than those with the conventional 2.0 wt % film coating of silicon dioxide or 1.5 wt % alumin ...
DOI:
10.1021/ie402539n

7. Coal Chemical Looping Gasification for Syngas Generation Using an Iron-Based Oxygen Carrier

Author:
Guo, Qingjie; Cheng, Yu; Liu, Yongzhuo; Jia, Weihua; Ryu, Ho-Jung
Source:
Industrial & Engineering Chemistry Research 2014 v.53 no.1 pp. 78-86
ISSN:
1520-5045
Subject:
X-ray diffraction; calcium oxide; carbon; coal; combustion; engineering; ferric oxide; ferrous oxide; fluidized beds; gasification; hydrogen; hydrogen sulfide; models; oxygen; reaction mechanisms; steam; synthesis gas
Abstract:
... The chemical-looping gasification (CLG) of coal is a clean and effective technology for syngas generation. Sharing principles with chemical-looping combustion (CLC), CLG also uses oxygen carriers to transfer lattice oxygen to the fuel. Investigations into CLG with different O/C ratios are carried out in a fluidized bed reactor with steam used as the gasification–fluidization medium. The effect of ...
DOI:
10.1021/ie401568x

8. Comparative Studies on the Solvent Quality and Atmosphere Humidity for Electrospinning of Nanoporous Polyetherimide Fibers

Author:
Fashandi, Hossein; Karimi, Mohammad
Source:
Industrial & Engineering Chemistry Research 2014 v.53 no.1 pp. 235-245
ISSN:
1520-5045
Subject:
engineering; nanopores; physical phases; porosity; relative humidity; solvent drying; solvents; temperature; viscoelasticity
Abstract:
... Implications regarding requirements of performing a successive electrospinning and producing nanoporous polyetherimide (PEI) fibers are discussed through electrospinning PEI solutions of three nonvolatile solvents, that is, dimethylforamide (DMF), dimethylacetamide (DMAc), and N-methyl-2-pyrrolidone (NMP), under atmospheres of constant temperature and varying levels of relative humidity (RH). The ...
DOI:
10.1021/ie4028846

9. Complex Extraction of Phenol and Cresol from Model Coal Tar with Polyols, Ethanol Amines, and Ionic Liquids Thereof

Author:
Meng, Hong; Ge, Chang-Tao; Ren, Nan-Nan; Ma, Wen-Yan; Lu, Ying-Zhou; Li, Chun-Xi
Source:
Industrial & Engineering Chemistry Research 2014 v.53 no.1 pp. 355-362
ISSN:
1520-5045
Subject:
acetates; chemistry; chlorides; choline; coal tar; engineering; ethanol; formates; glycerol; ionic liquids; models; oils; phenols; temperature; toluene
Abstract:
... To develop a greener process for reclaiming phenolic compounds from low temperature coal tar, extractive performance of twelve extractants, including mono-, di-, and triethanol amines (MEA, DEA, TEA), six protonated ionic liquids (ILs) thereof with formate (FA) or acetate (Ac) anion, choline chloride, and two polyols (glycol, glycerol), were studied at varying conditions, along with the back extra ...
DOI:
10.1021/ie402599d

10. Computational Fluid Dynamics Modeling of Hydrodynamics of a New Type of Fixed Valve Tray

Author:
Li, Xingang; Yang, Na; Sun, Yongli; Zhang, Luhong; Li, Xuegang; Jiang, Bin
Source:
Industrial & Engineering Chemistry Research 2014 v.53 no.1 pp. 379-389
ISSN:
1520-5045
Subject:
engineering; equations; hydrodynamics; liquids; models; momentum; surface tension; trays
Abstract:
... A three-dimensional computational fluid dynamics (CFD) model was developed to predict the hydrodynamics of a new type of fixed valve tray. The model considered gas- and liquid-flow within the Eulerian framework in which both phases were treated as interpenetrating continuum having separate transport equations. Interphase momentum transfer term was employed for describing the interfacial forces bet ...
DOI:
10.1021/ie400408u

11. Controlling and Formation Mechanism of Oxygen-Containing Groups on Graphite Oxide

Author:
Liu, Zhiting; Duan, Xuezhi; Zhou, Xinggui; Qian, Gang; Zhou, Jinghong; Yuan, Weikang
Source:
Industrial & Engineering Chemistry Research 2014 v.53 no.1 pp. 253-258
ISSN:
1520-5045
Subject:
Fourier transform infrared spectroscopy; Raman spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; engineering; epoxides; graphene; guidelines; moieties; nuclear magnetic resonance spectroscopy; oxidants; stable isotopes; zeta potential
Abstract:
... Controllable synthesis of graphite oxide (GO) for targeted surface properties is of great importance for its versatile applications. For this purpose, GO samples were prepared with different amounts of oxidant and characterized by X-ray diffraction, Fourier transform infrared spectroscopy, ¹³C cross-polarization with total sideband suppression magic-angle-spinning nuclear magnetic resonance, X-ray ...
DOI:
10.1021/ie403088t

12. Economic and Control Performance of a Fluid Catalytic Cracking Unit: Interactions between Combustion Air and CO Promoters

Author:
Wang, Rui; Luo, Xionglin; Xu, Feng
Source:
Industrial & Engineering Chemistry Research 2014 v.53 no.1 pp. 287-304
ISSN:
1520-5045
Subject:
air; air flow; catalytic cracking; combustion; controllers; dynamic models; economics; temperature
Abstract:
... The presence of CO combustion promoters significantly affects the heterogeneous CO combustion in the regenerator of a fluid catalytic cracking (FCC) unit. Neglecting the quantitative correlation between the heterogeneous CO combustion and the amount of added CO combustion promoters in the previous models makes it impossible to predict the steady-state and the dynamic behaviors of the system with r ...
DOI:
10.1021/ie401777n

13. Effect of Glass Fibers with Different Surface Properties on the Morphology and Properties of Polyamide 6/Poly(butylene terephthalate) Blends

Author:
Wang, Li; Guo, Zhao-Xia; Yu, Jian
Source:
Industrial & Engineering Chemistry Research 2014 v.53 no.1 pp. 206-213
ISSN:
1520-5045
Subject:
alkali tolerance; chemistry; encapsulation; engineering; glass fibers; polyamides; temperature
Abstract:
... The morphology and properties of polyamide 6 (PA6)/poly(butylene terephthalate) (PBT) blends filled by three types of glass fibers (GF) with different surface properties were investigated. The GF were unmodified or surface-modified for PA6 or PBT, denoted as GF(Pris), GF(PA6), and GF(PBT), respectively. The incorporation of 15 wt % of GF with different surface properties all led to a transition fr ...
DOI:
10.1021/ie4026133

14. Effect of Small Amount of Water on CO2 Bubble Behavior in Ionic Liquid Systems

Author:
Zhang, Xin; Dong, Haifeng; Bao, Di; Huang, Ying; Zhang, Xiangping; Zhang, Suojiang
Source:
Industrial & Engineering Chemistry Research 2014 v.53 no.1 pp. 428-439
ISSN:
1520-5045
Subject:
bubbles; carbon; carbon dioxide; deformation; engineering; ionic liquids; surface tension; viscosity; water content
Abstract:
... Adding a small amount of water to ionic liquids can greatly reduce the viscosities of ionic liquids, which is believed to be an effective and economical method to make ionic liquids being applied practically for carbon capture. However, how the water content influences the bubble behavior which is used to calculate transfer properties; this is important but has not been studied systematically. In ...
DOI:
10.1021/ie4020827

15. Effect of Stone Coal Chemical Composition on Sintering Behavior during Roasting

Author:
Zhao, Yunliang; Zhang, Yimin; Bao, Shenxu; Chen, Tiejun; Liu, Xiang
Source:
Industrial & Engineering Chemistry Research 2014 v.53 no.1 pp. 157-163
ISSN:
1520-5045
Subject:
aluminum oxide; calcium oxide; chemical composition; coal; engineering; hematite; quartz; roasting; temperature
Abstract:
... During the roasting of stone coal, a sintering phenomenon usually occurs, which is related to the chemical composition of the stone coal. In this study, the sintering beginning temperature (SBT) and ash fusion temperatures (AFTs) of stone coal with different CaO, Fe₂O₃, SiO₂ and Al₂O₃ content were investigated. FactSage has been used to calculate the phase distribution of roasted stone coal, to an ...
DOI:
10.1021/ie4022144

16. Effects of Magnetic Fields on Microbiologically Influenced Corrosion of 304 Stainless Steel

Author:
Zheng, Bijuan; Li, Kejuan; Liu, Hongfang; Gu, Tingyue
Source:
Industrial & Engineering Chemistry Research 2014 v.53 no.1 pp. 48-54
ISSN:
1520-5045
Subject:
X-ray photoelectron spectroscopy; biofilm; corrosion; energy-dispersive X-ray analysis; engineering; ferric oxide; ferrous oxide; magnetic fields; oil fields; plankton; stainless steel; sulfate-reducing bacteria; sustainable technology
Abstract:
... The effects of magnetic fields (MFs) on the corrosion of 304 stainless steel (SS304) caused by oil-field sulfate-reducing bacteria (SRB) were investigated. Experimental data showed that the MF lowered the population of planktonic SRB by almost 4 orders of magnitude and delayed the formation of SRB biofilms on the SS304 coupons. The mass losses and surface images of the coupons indicated that the a ...
DOI:
10.1021/ie402235j

17. Exploring High Operating Conditions in the Ibuprofen Precipitation by Rapid Expansion of Supercritical Solutions Process

Author:
Montes, A.; Litwinowicz, A. A.; Gradl, U.; Gordillo, M. D.; Pereyra, C.; Martínez de la Ossa, E. J.
Source:
Industrial & Engineering Chemistry Research 2014 v.53 no.1 pp. 474-480
ISSN:
1520-5045
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; crystal structure; engineering; ibuprofen; melting point; particle size; particle size distribution; raw materials; scanning electron microscopy; temperature
Abstract:
... Micronization of ibuprofen by a rapid expansion of supercritical solutions (RESS) process has been explored for a wide range of operating conditions, including temperatures above the melting point of ibuprofen. Morphologies, particle sizes (PSs), and particle size distributions (PSDs) have been analyzed by scanning electron microscopy and the crystallinity has been evaluated by X-ray diffraction m ...
DOI:
10.1021/ie402408j

18. High Solubilities for Methane, Ethane, Ethylene, and Propane in Trimethyloctylphosphonium Bis(2,4,4-trimethylpentyl) Phosphinate ([P8111][TMPP])

Author:
Liu, Xiangyang; Ruiz, Elia; Afzal, Waheed; Ferro, Víctor; Palomar, José; Prausnitz, John M.
Source:
Industrial & Engineering Chemistry Research 2014 v.53 no.1 pp. 363-368
ISSN:
1520-5045
Subject:
cations; engineering; ethane; ethylene; ionic liquids; methane; prediction; propane; solubility
Abstract:
... Solubilities are reported for methane, ethane, ethylene, and propane in trimethyloctylphosphonium bis(2,4,4-trimethylpentyl) phosphinate [P8111][TMPP] from 299 to 323 K up to 4 MPa. Consistent with prediction of COSMO-RS, [P8111][TMPP] shows large solubilities for all four hydrocarbons. Contrary to solubility data in conventional ionic liquids, in [P8111][TMPP] the solubility for ethane is higher ...
DOI:
10.1021/ie402677t

19. Impact of Mixing for the Production of CuO Nanoparticles in Supercritical Hydrothermal Synthesis

Author:
Zhou, Lu; Wang, Shuzhong; Xu, Donghai; Guo, Yang
Source:
Industrial & Engineering Chemistry Research 2014 v.53 no.1 pp. 481-493
ISSN:
1520-5045
Subject:
Reynolds number; crystallization; cupric oxide; engineering; equations; mixers; mixing; models; nanoparticles; particle size distribution; prediction
Abstract:
... The mixing process of metal salt solutions and supercritical water is essential to supercritical water hydrothermal synthesis (SWHS) to produce nanoparticles. A computational fluid dynamics (CFD) model was developed for predicting mixing efficiency and crystallization kinetics in SWHS mixers. The mixing efficiency was calculated from the micromixing model, and the kinetics model of crystallization ...
DOI:
10.1021/ie4029413

20. Industrial Application of a Continuous-Time Scheduling Framework for Process Analysis and Improvement

Author:
Hazaras, Matthew J.; Swartz, Christopher L. E.; Marlin, Thomas E.
Source:
Industrial & Engineering Chemistry Research 2014 v.53 no.1 pp. 259-273
ISSN:
1520-5045
Subject:
case studies; chemistry; engineering; food processing plants; industrial applications; issues and policy; models
Abstract:
... We investigate the potential benefits of applying short-term continuous-time scheduling optimization to an industrial multiproduct food processing plant. The facility exhibits several unique production policies that are not supported by current continuous-time scheduling models. Several extensions to a general global event continuous-time scheduling model are proposed to address these limitations. ...
DOI:
10.1021/ie4006904