Adsorption-enhanced steam–methane reforming

Ding, Yuhao; Alpay, E.

doi:10.1016/s0009-2509(99)00597-7

Cited by 281 publications

(181 citation statements)

References 35 publications

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“…Generally, an integral fixed-bed reactor with a mixture of the steam reforming catalyst and solid sorbent to selectively remove CO 2 is used. This process is well known as the sorption-enhanced reaction process and has been widely studied by steam methane reforming (Mayorga, et al, 1999;Ding, et al, 2000;Balasubramanian, et al, 1999;Kinoshita, et al, 2003;Yi, et al, 2005;Lee, et al, 2007;Li, et al, 2007;Essaki, et al, 2008;Harrison, 2008). For example, Balasubramanian et al (1999) reported on H 2 production through sorptionenhanced reaction process using a laboratory-scale fixed bed reactor containing a reforming catalyst and CaO formed by calcination of high-purity CaCO 3 , the results of which showed that a gas with a hydrogen content up to 95 % (dry basis) could be produced.…”

Section: Introductionmentioning

confidence: 99%

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Hydrogen production by sorption-enhanced steam reforming of glycerol

Dou

Dupont

Rickett

et al. 2009

Bioresource Technology

170

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Catalytic steam reforming of glycerol for H 2 production has been evaluated experimentally in a continuous flow fixed-bed reactor. The experiments were carried out under atmospheric pressure within a temperature range of 400-700C. A commercial Ni-based catalyst and a dolomite sorbent were used for the steam reforming reactions and in-situ CO 2 removal. The product gases were measured by online gas analyzers. The results show that H 2 productivity is greatly increased with increasing temperature and the formation of methane by-product becomes negligible above 500C. The results suggest an optimal temperature of ~500C for the glycerol steam reforming with in-situ CO 2 removal using calcined dolomite as the sorbent, at which the CO 2 breakthrough time is longest and the H 2 purity is highest. The * Author to whom correspondence should be addressed. Tel: 44 -113-3432503; Fax: 44 -113-2467310, v.dupont@leeds.ac.uk. 2 shrinking core-model and the 1D diffusion model describe well the CO 2 removal under the conditions of this work.

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Section: Introductionmentioning

confidence: 99%

“…Some studies also showed that CO 2 sorption enhancement enables the use of a lower reaction temperature, which may reduce energy usage and catalyst sintering. At the same time, it is possible for the steam reforming process to 5 use less expensive reactor materials (Ding, et al, 2000;Lee, et al, 2007;Essaki, et al, 2008;Harrison, 2008).…”

Section: Introductionmentioning

confidence: 99%

Hydrogen production by sorption-enhanced steam reforming of glycerol

Dou

Dupont

Rickett

et al. 2009

Bioresource Technology

170

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“…[14][15][16] Recently, LDH materials have also been investigated in novel reactive separation processes to increase the conversion of catalytic reactions by removing one of the products from the reactor. 17,18 In our research these materials are used for the preparation of nanoporous membranes, intended for the separation of gases, particularly CO 2 , at high temperatures. 19 LDH find applications in a broad range of temperatures, from room-temperature adsorption to high-temperature catalytic reactions and separations.…”

Section: Introductionmentioning

confidence: 99%

Thermal Evolution of the Structure of a Mg−Al−CO₃ Layered Double Hydroxide: Sorption Reversibility Aspects

Kim

Yang

Liu

et al. 2004

Ind. Eng. Chem. Res.

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In our prior study, we employed several in-situ techniques to investigate the thermal evolution of the structure of a Mg-Al-CO 3 layered double hydroxide (LDH) under an inert atmosphere and proposed a model to describe the structural evolution of the Mg-Al-CO 3 LDH structure. In this paper we present results of our ongoing investigations with these materials pertaining to their sorption characteristics and thermal reversibility under both inert and reactive atmospheres. The experimental observations are shown to be consistent with the structural model for the LDH previously proposed. The structure, sorption characteristics, and thermal reversibility of these materials are of importance in their use for the preparation of CO 2 -permselective membranes for high-temperature membrane reactor applications.

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“…[2][3][4][5] Laboratory-scale demonstrations of such a process were conducted with beds composed of crushed commercial nickel-based reforming catalysts and sorbent particles selected for removing CO 2 from the reaction mixture. Different sorbents were used including calcium oxide and a potassium carbonate promoted hydrotalcite.…”

Section: Introductionmentioning

confidence: 99%

Development of a Novel Combined Catalyst and Sorbent for Hydrocarbon Reforming

Satrio

Shanks

Wheelock

2005

Ind. Eng. Chem. Res.

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A combined catalyst and sorbent was prepared and utilized for steam reforming methane and propane in laboratory-scale systems. The material was prepared in the form of small spherical pellets having a layered structure such that each pellet consisted of a highly reactive lime or dolime core enclosed within a porous but strong protective shell made of alumina in which a nickel catalyst was loaded. The material served two functions by catalyzing the reaction of hydrocarbons with steam to produce hydrogen while simultaneously absorbing carbon dioxide formed by the reaction. The in situ removal of CO 2 shifted the reaction equilibrium toward increased H 2 concentration and production. The concept was proved by using both a thermogravimetric analyzer and a fixed-bed reactor loaded with the material to reform hydrocarbons. Tests conducted with the fixed-bed reactor at atmospheric pressure and with temperatures in the range of 520-650Â°C produced a product containing a large concentration of H 2 (e.g., 94-96 mol %) and small concentration of CO and CO 2. Therefore, the results achieved in a single step were as good as or better than those achieved in a conventional multistep reaction and separation process. A combined catalyst and sorbent was prepared and utilized for steam reforming methane and propane in laboratory-scale systems. The material was prepared in the form of small spherical pellets having a layered structure such that each pellet consisted of a highly reactive lime or dolime core enclosed within a porous but strong protective shell made of alumina in which a nickel catalyst was loaded. The material served two functions by catalyzing the reaction of hydrocarbons with steam to produce hydrogen while simultaneously absorbing carbon dioxide formed by the reaction. The in situ removal of CO 2 shifted the reaction equilibrium toward increased H 2 concentration and production. The concept was proved by using both a thermogravimetric analyzer and a fixed-bed reactor loaded with the material to reform hydrocarbons. Tests conducted with the fixed-bed reactor at atmospheric pressure and with temperatures in the range of 520-650°C produced a product containing a large concentration of H 2 (e.g., 94-96 mol %) and small concentration of CO and CO 2 . Therefore, the results achieved in a single step were as good as or better than those achieved in a conventional multistep reaction and separation process.

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Adsorption-enhanced steam–methane reforming

Cited by 281 publications

References 35 publications

Hydrogen production by sorption-enhanced steam reforming of glycerol

Hydrogen production by sorption-enhanced steam reforming of glycerol

Thermal Evolution of the Structure of a Mg−Al−CO₃ Layered Double Hydroxide: Sorption Reversibility Aspects

Development of a Novel Combined Catalyst and Sorbent for Hydrocarbon Reforming

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Adsorption-enhanced steam–methane reforming

Cited by 281 publications

References 35 publications

Hydrogen production by sorption-enhanced steam reforming of glycerol

Hydrogen production by sorption-enhanced steam reforming of glycerol

Thermal Evolution of the Structure of a Mg−Al−CO3 Layered Double Hydroxide: Sorption Reversibility Aspects

Development of a Novel Combined Catalyst and Sorbent for Hydrocarbon Reforming

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Product

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Thermal Evolution of the Structure of a Mg−Al−CO₃ Layered Double Hydroxide: Sorption Reversibility Aspects