Thermal degradation of organic matter in the interlayer clay–organic complex: A TG-FTIR study on a montmorillonite/12-aminolauric acid system

Liu, Hongmei; Yuan, Peng; Qin, Zhan-Fen; Liu, Dong; Tan, Daoyong; Zhu, Jianxi; He, Hongping

doi:10.1016/j.clay.2013.07.005

Cited by 55 publications

(34 citation statements)

References 49 publications

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“…12-aminolauric acid (ALA; NH 2 (CH 2 ) 11 COOH) was selected as the model for evaluating the catalytic activity of the Al-incorporated diatomite. ALA contains amino and carboxyl groups and can provide simultaneous estimates of the B and L acidity of the catalyst during thermal decomposition, as previously reported [25][26][27].…”

Section: Introductionmentioning

confidence: 80%

“…Gaseous products such as CO 2 and NH 3 from COOH and NH 2 groups of ALA were formed from the thermal degradation of ALA when ALA was catalyzed by solid acid sites, as previously reported [26]. The gaseous products were estimated using red litmus test papers and CaCl 2 for NH 3 and CO 2 , respectively.…”

Section: Evaluation Of the Catalytic Activity Of Diatomite And Its Almentioning

confidence: 99%

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Enhancement of diatomite solid acidity by Al incorporation, as evaluated by the catalytic effects on the thermal decomposition of 12-aminolauric acid

Deng

Dong

et al. 2016

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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Section: Introductionmentioning

confidence: 80%

Section: Evaluation Of the Catalytic Activity Of Diatomite And Its Almentioning

confidence: 99%

Enhancement of diatomite solid acidity by Al incorporation, as evaluated by the catalytic effects on the thermal decomposition of 12-aminolauric acid

Deng

Dong

et al. 2016

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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“…Consequently, IR and X-ray analyses confirmed the formation of the modified Mt by ion-exchange reaction [8]. Thermogravimetry coupled with Fourier-Transform infrared spectroscopy (TG-FT-IR) analysis has also been employed on the Mt/ALA system to prove that the interlayer space of clay minerals provides the storage space for organic matter [14]. In recent studies, Mt has been altered using different cationic surfactants (e.g., octadecylamine, dioctadecyldimethyammonium chloride) in aqueous or organic solvents [20,21,22].…”

Section: Introductionmentioning

confidence: 99%

“…Second, it causes widening of the interlayer spaces between the silicate layers of the clay mineral for cationic surfactants of long carbon chain [16,17]. For in situ intercalative polymerization, the process takes place within the silicate layers, causing further intercalation or complex delamination of the inorganic structures [4,14]. The expanded interlayer space facilitates the monomer diffusion which, in return, results to effective polymerization.…”

Section: Introductionmentioning

confidence: 99%

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Synthesis and characterization of 12-aminolauric acid-modified montmorillonite for catalytic application

Pagtalunan¹,

Sumera²,

Conato³

2018

AIP Conference Proceedings

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Abstract. The simple cation-exchange preparation of 12-aminolauric acid-modified montmorillonite (ALA-Mt), an aluminosilicate clay modified with the alkylammonium surfactant, is reported. Different loadings of 12-aminolauric acid (12-ALA) from 100 to 400 times the cation exchange capacity (CEC) in montmorillonite (Mt) was prepared and studied. Successful intercalation of the organic surfactant was monitored by the increase in basal (d001) spacing of the organoclay compared to the pure Mt. The clay mineral composite have increased surfactant loading resulting to lower degradation temperatures, rougher surface morphology, increased particle size, and increased organophilicity of the organoclay compared to the native Mt. The improved properties of ALA-Mt present it as an attractive catalyst material for polymerization reactions.

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Adsorption characteristics of clay‐organic complexes and their role in shale gas resource evaluation

Mao

Zhang

Pei

et al. 2018

Energy Science & Engineering

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Adsorbed gas can share a significant portion of total gas content in shale reservoirs. At the same time, the adsorption characteristics of clay‐organic complexes which commonly exist in reservoir formations differ from other lithologies. To better understand the effect of adsorption characteristics of clay‐organic complexes on shale gas storage mechanism and estimation of resources, clay‐organic complexes were extracted from original core samples obtained from shales of Niutitang (NTT) and Longmaxi (LMX) formations in the northern Guizhou region, China. Petrophysical and adsorption experiments were performed and results show that the adsorbability of the clay‐organic complexes is obviously higher than regular shales in the reservoir. Therefore, the gas contents calculated based on the adsorbability of clay‐organic complexes are higher by 30%‐70% than that based on regular shales. Combined with other measured petrophysical properties, the NTT and LMX shales display a promising potential for further exploration and development. The clay‐organic complexes may accumulate in certain areas in the reservoir, and these accumulated areas could form the “sweet spots” for shale gas development. Methodologies and results presented in this study are beneficial in more accurately understanding gas storage mechanism, estimating gas resources and identifying sweet spots in shale reservoirs.

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Thermal degradation of organic matter in the interlayer clay–organic complex: A TG-FTIR study on a montmorillonite/12-aminolauric acid system

Cited by 55 publications

References 49 publications

Enhancement of diatomite solid acidity by Al incorporation, as evaluated by the catalytic effects on the thermal decomposition of 12-aminolauric acid

Enhancement of diatomite solid acidity by Al incorporation, as evaluated by the catalytic effects on the thermal decomposition of 12-aminolauric acid

Synthesis and characterization of 12-aminolauric acid-modified montmorillonite for catalytic application

Adsorption characteristics of clay‐organic complexes and their role in shale gas resource evaluation

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