scholarly journals Hydrogenation of Maltose in Catalytic Membrane Reactor for Maltitol Production

2018 ◽  
Vol 156 ◽  
pp. 08008 ◽  
Author(s):  
I.G.B.N. Makertihartha ◽  
Khoiruddin ◽  
Ahmad N. Hakim ◽  
P.T.P. Aryanti ◽  
I.G. Wenten
Keyword(s):  
Membrane Reactor ◽  
Ceramic Membrane ◽  
Operating Pressure ◽  
Catalytic Membrane ◽  
Catalytic Membrane Reactor ◽  
Batch Mode ◽  
Food Industries ◽  
Reaction Conversion ◽  
Preliminary Study ◽  
Sugar Replacement

Maltitol is one of the low-calorie sweeteners which has a major role in food industries. Due to its characteristics of comparable sweetness level to sucrose, maltitol can be a suitable sugar replacement. In this work, catalytic membrane reactor (CMR) was examined in maltitol production through hydrogenation of maltose. Commercial ceramic membrane impregnated with Kalcat 8030 Nickel was used as the CMR. The reaction was conducted at a batch mode operation, 95 to 110°C of temperature, and 5 to 8 bar of pressure. In the range of working conditions used in this study, up to 47% conversion was achieved. The reaction conversion was significantly affected by temperature and pressure. Results of this preliminary study indicated that CMR can be used for hydrogenation of maltose with good performance under a relatively low operating pressure.

scholarly journals Modeling of ethylbenzene dehydrogenation in catalytic membrane reactor with porous membrane

2014 ◽  
Vol 2 (1) ◽  
pp. 1-9 ◽  
Author(s):  
E.V. Shelepova ◽  
A.A. Vedyagin ◽  
I.V. Mishakov ◽  
A.S. Noskov
Keyword(s):  
Mathematical Model ◽  
Membrane Reactor ◽  
Ceramic Membrane ◽  
Porous Ceramic ◽  
Porous Membrane ◽  
Membrane Reactors ◽  
Catalytic Membrane ◽  
Catalytic Membrane Reactor ◽  
Membrane Pore ◽  
Ethylbenzene Dehydrogenation

AbstractThe modeling of ethylbenzene dehydrogenation in a catalytic membrane reactor has been carried out for porous membrane by means of two-dimensional, non-isothermal stationary mathematical model. A mathematical model of the catalytic membrane reactor was applied, in order to study the effects of transport properties of the porous membrane on process performance. The performed modeling of the heat and mass transfer processes within the porous membrane, allowed us to estimate the efficiency of its use in membrane reactors, in comparison with a dense membrane (with additional oxidation of the hydrogen in shell side). The use of a porous ceramic membrane was found to cause an increase of the ethylbenzene conversion at 600°C, up to 93 %, while the conversion in the case of conventional reactor was 67%. In this work, we defined the key parameter values of porous membrane (pore diameter and thickness) for ethylbenzene dehydrogenation in catalytic membrane reactor, at which the highest conversion of ethylbenzene and styrene selectivity can be reached.

scholarly journals Gas pollutant cleaning by a membrane reactor

2006 ◽  
Vol 10 (3) ◽  
pp. 143-149
Author(s):  
Sotiris Kaldis ◽  
Savas Topis ◽  
Dimitris Koutsonikolas
Keyword(s):  
Inductively Coupled Plasma ◽  
Membrane Reactor ◽  
Ceramic Membrane ◽  
Combined Cycle ◽  
Impregnation Method ◽  
Catalytic Membrane ◽  
Catalytic Membrane Reactor ◽  
Integrated Gasification Combined Cycle ◽  
Inductively Coupled ◽  
Before And After

An alternative technology for the removal of gas pollutants at the integrated gasification combined cycle process for power generation is the use of a catalytic membrane reactor. In the present study, ammonia decomposition in a catalytic reactor, with a simultaneous removal of hydrogen through a ceramic membrane, was investigated. A Ni/Al2O3 catalyst was prepared by the dry and wet impregnation method and characterized by the inductively coupled plasma method, scanning electron microscopy, X-ray diffraction, and N2 adsorption before and after activation. Commercially available a-Al2O3 membranes were also characterized and the permeabilities and permselectivities of H2, N2, and CO2 were measured by the variable volume method. In parallel with the experimental analysis, the necessary mathematical models were developed to describe the operation of the catalytic membrane reactor and to compare its performance with the conventional reactor. .

The selective oxidation of benzyl alcohol using a novel catalytic membrane reactor

2002 ◽  
Vol 4 (5) ◽  
pp. 459-460 ◽  
Author(s):  
David W. Hall ◽  
Georgia Grigoropoulou ◽  
James H. Clark ◽  
Keith Scott ◽  
Roshan J. J. Jachuck
Keyword(s):  
Benzyl Alcohol ◽  
Selective Oxidation ◽  
Membrane Reactor ◽  
Catalytic Membrane ◽  
Catalytic Membrane Reactor ◽  
Oxidation Of Benzyl Alcohol

Asymmetric nickel hollow fibres as the catalytic membrane reactor for CO2 hydrogenation into syngas

2019 ◽  
Vol 55 (29) ◽  
pp. 4226-4229 ◽  
Author(s):  
Mingming Wang ◽  
Xiaoyao Tan ◽  
Xiaobin Wang ◽  
Bo Meng ◽  
Shaomin Liu
Keyword(s):  
Membrane Reactor ◽  
Skin Layer ◽  
Single Step ◽  
Co2 Hydrogenation ◽  
Catalytic Membrane ◽  
Porous Substrate ◽  
Catalytic Membrane Reactor ◽  
Hollow Fibres

Herein, we report the development of highly asymmetric Ni hollow fibres with a dense skin layer integrated on a porous substrate by a single-step spinning and sintering technique.

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