A novel process and material for the separation of carbon dioxide and hydrogen sulfide gas mixtures

Burchell, Timothy D; Judkins, R.R.; Rogers, Mike; Williams, A.M.

doi:10.1016/s0008-6223(97)00077-8

Cited by 145 publications

(71 citation statements)

References 15 publications

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“…Enhanced thermal conductivity will tend to reduce the significance of the two phenomena. Moreover, the ability to electrically stimulate desorption of the adsorbed gas [4] offers the possibility of completely eliminating the gas pressure/supply problem associated with fast discharge. …”

Section: Figure 7 Methane Storage Capacities Of Ornl's Novel Monolithsmentioning

confidence: 99%

Low Pressure Storage of Natural Gas for Vehicular Applications

Burchell¹,

Rogers²

2000

SAE Technical Paper Series

124

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Natural gas is an attractive fuel for vehicles because it is a relatively clean-burning fuel compared with gasoline. Moreover, methane can be stored in the physically adsorbed state [at a pressure of 3.5 MPa (500 psi)] at energy densities comparable to methane compressed at 24.8 MPa (3600 psi). Here we report the development of natural gas storage monoliths [1]. The monolith manufacture and activation methods are reported along with pore structure characterization data. The storage capacities of these monoliths are measured gravimetrically at a pressure of 3.5 MPa (500 psi) and ambient temperature, and storage capacities of >150 V/V have been demonstrated and are reported.

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Section: Figure 7 Methane Storage Capacities Of Ornl's Novel Monolithsmentioning

confidence: 99%

Low Pressure Storage of Natural Gas for Vehicular Applications

Burchell¹,

Rogers²

2000

SAE Technical Paper Series

124

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“…CMSs can be prepared from a wide variety of carbonaceous precursors, such as lignocellulosic materials [5], coals [6,7], carbon fibres [4,8,9] and pitches [10,11] by different methods [4][5][6][7][8][9][10][11][12][13][14]: (i) pyrolysis of polymers, (ii) controlled gasification of chars to increase the pore size, (iii) thermal treatment of carbon precursor to modify the pore size, (iv) chemical vapor deposition (CVD) of carbon at the entrance of the pores and, (v) modification of coals by mixing with tars and resins and subsequent carbonization. In most of these cases, several steps are required in their preparation method.…”

Section: Introductionmentioning

confidence: 99%

Effect of the stabilisation time of pitch fibres on the molecular sieve properties of carbon fibres

Vilaplana-Ortego

Alcañiz-Monge

Cazorla‐Amorós

et al. 2008

Microporous and Mesoporous Materials

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The stabilisation of pitch fibres (PFs) is the most important step for their subsequent use in the preparation of carbon fibres (CFs) and their resulting characteristics. The present work studies the influence that the stabilisation time has on the porosity of the CFs, and on the subsequent properties as carbon molecular sieve (CMS). The increase of the stabilisation time carried out at 573 K, from 2 to 8 h favours their CMS properties producing a decrease in the microposity accessible to N 2 , which gets completely blocked after 6 and 8 h, while the narrow microporosity (V-DR CO 2 ) remains accessible. Adsorption kinetic studies with CH 4 and CO 2 were performed to assess the possibility of using these CFs as CMS by comparing them with Takeda 3A CMS. The results suggest that there is an optimal stabilisation time which allows the preparation of CFs from an abundant raw precursor with properties similar to Takeda 3A CMS.

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“…[1][2][3] Upon thermal activation, usually in CO 2 or steam, the carbon fiber-based material develops a large micropore volume (0.5-1.0 cm 3 /g) and high BET surface area (1000-2200 m 2 /g). As shown in the scanning electron microscopy (SEM) image in Figure 1, the structure of CFCMS comprises carbon fibers (about 10 μm in diameter) bonded at their contact points to provide a continuous carbon skeleton that is electrically conductive.…”

Section: Introductionmentioning

confidence: 99%