Adsorption of CO2 on silica dioxide catalyst impregnated with various alkylamine

Tahari, Maratun Najiha Abu; Yarmo, Mohd Ambar

doi:10.1063/1.4895218

Cited by 9 publications

(4 citation statements)

References 29 publications

(51 reference statements)

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“…The pore size of AC was slightly increased (refer to Table I) with increasing amount of ODA loaded. This proves that the impregnation produces a drastic decrease in the surface area and pore volume of AC due to the blockage of smaller pores by fatty amine as stated by [23]. Thus, the average pore diameter for 25 ODA/AC is referring to the bigger pores of AC that remained after the impregnation.…”

Section: B Nitrogen Adsorption -Desorption Isothermsmentioning

confidence: 98%

“…SiO 2 with the highest ODA loading possess the best adsorption performance (2.45 wt % CO 2 /adsorbent) compared to other loading. This could be attributed to the presence of 25 wt % ODA which gave lowest pore area, pore volume, pore width of the SiO 2 which provide numerous chemical adsorption sites for CO 2 molecules and causes the formation of stronger CO 2 -ODA interaction in the SiO 2 pore surfaces [23]. Modification of SiO 2 surfaces by 5 wt % and 15 wt % ODA were not improving the CO 2 uptake significantly (11.04 and 17.93 mg CO 2 /g adsorbent) compared to SiO 2 only (18.46 mg CO 2 /g adsorbent).…”

Section: Co 2 Adsorption Cmentioning

confidence: 99%

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Modification of Porous Materials by Saturated Fatty Amine as CO2 Capturer

Tahari¹,

Hakim²,

Hisham³

et al. 2015

IJCEA

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the common porous materials being used as CO 2 capturer. In this work, saturated fatty amine (octadecylamie,ODA) was evaluated as a potential source of basic sites for CO 2 capture. Both commercial SiO 2 and AC were used as preliminary supports in order to study the effect of loading. The amine-modified samples were characterized using x-ray diffractometer (XRD), attenuated total reflextance/fourier transform infrared spectroscopy (ATR/FTIR), and Brunauer-Emmet-Teller (BET). Reactivity of solid sorbents towards CO 2 was evaluated using isothermal CO 2 adsorption by BET technique. This study shows that the order of CO 2 adsorption capacity by SiO 2 type adsorbents are 25 ODA/SiO 2 > SiO 2 > 15 ODA/SiO 2 > 5 ODA/SiO 2 whereas AC > 5 ODA/AC > 15 ODA/AC > 25 ODA/AC for AC type adsorbents. However, the promotion of ODA compounds on the AC was not improving the CO 2 uptake significantly due to pore blockage and drastic reduction in microporous surface area and pore volume of AC.Index Terms-Adsorption, amine impregnation, CO 2 capture. I. INTRODUCTIONCarbon dioxide is one of green house gases, known as main anthropogenic contributors to climate change which has drawn significant attention to researchers in looking to develop strategies for reducing the CO 2 emissions and concentration. Increasing concentration of CO 2 contributes to global warming and climate changes that give critical effects to environment, infrastructures and human. There were several works reported in reducing CO 2 concentration by capture and separate the CO 2 gas. There are different unit operations such as liquid absorption, cryogenic techniques [6], and selective diffusion through polymer, metallic or ceramic membranes [7].The development of solid sorbents has focused on the modification of solid surfaces with usually having amine compounds. The solid sorbents should have a porous structure to be filled with amine compounds to enable the retention of CO 2 molecules. The commonly used porous solid supports are silica fume [8] [12], and hydrotalcyte [13]. However, application of solid sorbents together with octadecylamine (ODA) as CO 2 capturer is still limited. Selected porous materials for this study are silica dioxide (SiO 2 ) and activated carbon (AC). SiO 2 and AC surfaces will be modified with ODA compounds by impregnation method to develop high dispersion of amine and thus will give better CO 2 adsorption performance. Hence, the objective of this study is to characterize and explore the effect of ODA compounds supported on the surface of SiO 2 and AC towards CO 2 adsorption capacity. II. PROCEDURES AND METHODSSilica-amine adsorbent was prepared by use of wet impregnation. Firstly, commercial silica dioxide, SiO 2 received from Fluka was calcined at 400 °C for 4 hours in air before impregnated with octadecylamine, ODA (ALDRICH ® , 97%). Chloroform, CHCl 3 (SYSTERM ® , 99-99.4%) was added to dissolve the ODA. After stirring for 4 hours in a close system, the mixture was rested for 1 hour before sonicate (S 4000-010 Sonicator 4000). The mixtu...

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Section: B Nitrogen Adsorption -Desorption Isothermsmentioning

confidence: 98%

Section: Co 2 Adsorption Cmentioning

confidence: 99%

Modification of Porous Materials by Saturated Fatty Amine as CO2 Capturer

Tahari¹,

Hakim²,

Hisham³

et al. 2015

IJCEA

Self Cite

View full text Add to dashboard Cite

show abstract

“…Another important application is carbon dioxide (CO 2 ) adsorption on amine-functionalized silica aerogels [ 19 , 20 ]. Functionalized silica aerogels possess properties for application as adsorbents in a closed-loop environmental control system [ 21 , 22 ]. However, a limited amount of literature reported on functionalizing silica aerogel by metal nanoparticles such as Nobel metals and their application in CO 2 storage [ [23] , [24] , [25] , [26] ].…”

Section: Introductionmentioning

confidence: 99%

Investigation of palladium catalysts in mesoporous silica support for CO oxidation and CO2 adsorption

Soubaihi¹,

Saoud²,

Awadallah‐F³

et al. 2023

Heliyon

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“…Previous study, straight chain alkylamine with C18 known as octadecylamine was developed as CO 2 sorbent. Octadecylammonium octadecylcarbamate ion pairs (alkylammonium alkylcarbamate) was formed on contact with dry CO 2 [8]. Belmabkhout et al [9] reported, under dry conditions, carbamate with CO 2 /N stoichiometry ratio of 0.5 is formed.…”

Section: Introductionmentioning

confidence: 99%

Carbon Dioxide Sorption by Tetradecylamine Supported on Silica Gel

Tahari

Hakim

Marliza

et al. 2017

MJAS

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Carbon dioxide emissions generated from fossil fuel-based power plants and other industries has reached 400 ppm in atmosphere. This negatively impact the environment, infrastructures and wildlife in particular. A lot of efforts are needed to produce CO 2 gas sorbent in order to reduce high CO 2 concentration. Therefore, porous silica gel (SG) is modified with amine compound for carbon dioxide capture. Calcinated silica gel functionalized with tetradecylamine (TDA) using wet impregnation has been developed as a porous media. The prepared sorbents is characterized by N 2 physisorption technique Brunauer-Emmet-Teller analysis (BET). Significant changes in physical properties of the sorbents further ascertained the dispersion of TDA on the internal channels and external surface of the SG. Reactivity of porous sorbent towards CO 2 was evaluated using isothermal CO 2 adsorption desorption technique. This study shows 65TDA/SG enable to adsorb CO 2 in the highest capacity which is 23.22 cm 3 CO 2 per gram sorbent. Moreover, CO 2 capture consists of two type sorption which are physisorption and chemisorption. 55TDA/SG is the best sorbent in capturing CO 2 by chemisorption (19.62 cm 3 CO 2 per gram adsorbent).

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Adsorption of CO2 on silica dioxide catalyst impregnated with various alkylamine

Cited by 9 publications

References 29 publications

Modification of Porous Materials by Saturated Fatty Amine as CO2 Capturer

Modification of Porous Materials by Saturated Fatty Amine as CO2 Capturer

Investigation of palladium catalysts in mesoporous silica support for CO oxidation and CO2 adsorption

Carbon Dioxide Sorption by Tetradecylamine Supported on Silica Gel

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