Strontium hydroxide-modified nanoclay montmorillonite for CO
            <sub>2</sub>
            capture: response surface methodology and adsorption mechanism

Khajeh, Mojtaba; Ghaemi, Ahad

doi:10.1080/03067319.2021.1938018

Cited by 12 publications

(5 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Previous research showed that strontium hydroxide can react with CO 2 from the environment and form strontium carbonate . It is worth mentioning that strontium hydroxide is a known adsorbent of carbon dioxide forming strontium carbonate after adsorption of CO 2 . , This reaction is likely to happen in our synthesis condition because the formation of strontium carbonate from strontium hydroxide and carbon dioxide is thermodynamically favorable (Δ G ° = -4.4 kJ/mol in room temperature) . After the formation of strontium carbonate particles, the presence of hyperbranched polyglycerol within the SrCO 3 acts as a template matrix for the material to form the urchin-like strontium carbonate.…”

Section: Results and Discussionmentioning

confidence: 85%

“…52,67 This reaction is likely to happen in our synthesis condition because the formation of strontium carbonate from strontium hydroxide and carbon dioxide is thermodynamically favorable (ΔG°= -4.4 kJ/mol in room temperature). 68 After the formation of strontium carbonate particles, the presence of hyperbranched polyglycerol within the SrCO 3 acts as a template matrix for the material to form the urchin-like strontium carbonate.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Role of CO₂ and Glycerol in the Formation of Urchin-Like Strontium Carbonate Particles

Ghorbani,

Yurkiv,

Gonçalves

et al. 2024

ACS Sustainable Chem. Eng.

View full text Add to dashboard Cite

Green synthesis of micro/nanomaterials, using glycerol as a sustainable solvent, offers environmentally and health-friendly pathways. Glycerol’s versatility in a solvothermal synthesis is effective for nanoparticle production, yet its mechanistic role in carbonate material formation is unexplored. This study investigates urchin-like strontium carbonate formation via a glycerol-mediated solvothermal synthesis, employing in situ transmission electron microscopy (in situ TEM), scanning electron microscopy, density function theory (DFT), scanning transmission electron microscopy, and X-ray diffraction. In situ TEM observations unveil the initial stages of strontium hydroxide nucleation and subsequent growth as an intermediate phase. The findings suggested that the hyperbranched polymerization of glycerol plays a pivotal role in the formation of urchin-like morphology. Furthermore, the synergistic effect of glycerol and CO2 is proposed as the primary driver for the formation of strontium carbonate. Notably, observations showed a morphological transition from spherical to urchin-like with increasing reaction time. DFT studies proposed glycerol as a coadsorbent, boosting the adsorption energy of CO2 and directing its interaction with Sr(OH)2 resulting in the stable formation of SrCO3. This research provides valuable insights into the urchin-like strontium carbonate formation in a time-dependent process driven by the polymerization of glycerol and its high reactivity with dissolved CO2 at elevated temperatures.

show abstract

Section: Results and Discussionmentioning

confidence: 85%

Section: ■ Results and Discussionmentioning

confidence: 99%

Role of CO₂ and Glycerol in the Formation of Urchin-Like Strontium Carbonate Particles

Ghorbani,

Yurkiv,

Gonçalves

et al. 2024

ACS Sustainable Chem. Eng.

View full text Add to dashboard Cite

show abstract

“…In 2021, Penchah et al [147] used nano-montmorillonite impregnated with diethanolamine for CO 2 adsorption and found that it had a CO 2 adsorption of 219.9 mg/g. At the same time, Khajeh and Ghaemi [146] modified montmorillonite clay with strontium hydroxide for CO 2 adsorption and found that it had a CO 2 adsorption of 102.21 mg/g at 25 • C and a bar pressure of 9.…”

Section: Air Pollutionmentioning

confidence: 98%

Applicability of Clay/Organic Clay to Environmental Pollutants: Green Way—An Overview

Qi,

Yu,

Shah

et al. 2023

Applied Sciences

View full text Add to dashboard Cite

Natural clay mineral and its modifier called modified clay have been used in many environmental applications for a number of years. However, they are not capable enough to achieve a higher conversion rate and so-called ecological sustainability. This can be due to a lack of understanding of the selectivity of the clay and its modifier or a lack of compatibility between clay and pollutants. Recently, the development and implementation of green principles into practice have become an emerging field that brings together green chemistry and engineering practices to achieve a pollutant-free environment (air, water, and soil). This review summarizes the role of clay/modified clay in pollution control and discusses the role of green chemistry in creating global sustainability. In this context, this review sheds light on the complete classification of the clay family to identify its properties and to critically examine the applicability of clay and modified clay for air, water, and soil pollution control over the past decade. This is the unique point of this review, showing how the properties of clay/modified clay can be useful for removing any type of pollutant without focusing on a single type of pollutant or clay. Furthermore, the importance of green materials in clay research, as well as the future area of application, was discussed. Overall, this review places value on multidisciplinary researchers to determine the role of the green pathway in the application of clay and modified clay in achieving environmental sustainability.

show abstract

“…R 2 and MSE values were obtained as 0.9976 and 0.0045, respectively. In 2021, Khajeh and Ghaemi 35 captured CO 2 from strontium hydroxide‐modified nanoclay montmorillonite. It was modeled with response surface methodology (RSM) with four input factors.…”

Section: Introductionmentioning

confidence: 99%

“…39,50,51 The RSM method combines statistical and mathematical methods that allow us to estimate complex relationships between the parameters and to optimize them. RSM designs are used to find the optimal operational conditions, 35,51 the troubleshoot process problems and the weak points, and make a process more insensitive to external and noncontrollable influences. 52 Nowadays, RSM has been applied for modeling 39,[53][54][55][56] and optimization, 53,56,57 finding the effects of each parameters 58 on the CO 2 capture processes.…”

mentioning

confidence: 99%

Artificial intelligence and response surface methodology to predict CO₂ capture using piperazine‐modified activated alumina

Noroozian

Shahhosseini

Ghaemi

2023

Env Prog and Sustain Energy

Self Cite

View full text Add to dashboard Cite

Carbon dioxide (CO2) is a major greenhouse gas that causes global warming. In this study, piperazine‐modified activated alumina was used for CO2 capture process. The number of 626 experimental data were obtained at different operating conditions to develop the artificial neural networks (ANNs) and response surface methodology (RSM), employed to identify the behavior and performance of the CO2 capture process. Three independent factors, including time (t: 0–1800 s), temperature (T: 20–80°C), and pressure (P: 2.067–10.088 bar), were used as the input variables and CO2 adsorption capacity was used as the response. Among 243 different structures, the multilayer perceptron (MLP) model was optimized with Bayesian regularization backpropagation algorithm and two hidden layers with 17 and 16 neurons. The radial basis function (RBF) model was used with 367 different structures. The optimized structure of the RBF model was obtained with 100 neurons and the spread of 0.5. For optimal networks of MLP and RBF, the best mean square error (MSE) was observed at 1.72e‐04 and 8.28e‐05, and the best coefficient of determination (R2) was obtained 0.998 and 0.999, respectively. Moreover, the response surface methodology (RSM) was used to model the process. The best MSE and R2 values were obtained 0.00454 and 0.9462, respectively. The results showed that ANNs produced more accurate predictions than RSM.

show abstract

Strontium hydroxide-modified nanoclay montmorillonite for CO ₂ capture: response surface methodology and adsorption mechanism

Cited by 12 publications

References 43 publications

Role of CO₂ and Glycerol in the Formation of Urchin-Like Strontium Carbonate Particles

Role of CO₂ and Glycerol in the Formation of Urchin-Like Strontium Carbonate Particles

Applicability of Clay/Organic Clay to Environmental Pollutants: Green Way—An Overview

Artificial intelligence and response surface methodology to predict CO₂ capture using piperazine‐modified activated alumina

Contact Info

Product

Resources

About

Strontium hydroxide-modified nanoclay montmorillonite for CO 2 capture: response surface methodology and adsorption mechanism

Cited by 12 publications

References 43 publications

Role of CO2 and Glycerol in the Formation of Urchin-Like Strontium Carbonate Particles

Role of CO2 and Glycerol in the Formation of Urchin-Like Strontium Carbonate Particles

Applicability of Clay/Organic Clay to Environmental Pollutants: Green Way—An Overview

Artificial intelligence and response surface methodology to predict CO2 capture using piperazine‐modified activated alumina

Contact Info

Product

Resources

About

Strontium hydroxide-modified nanoclay montmorillonite for CO ₂ capture: response surface methodology and adsorption mechanism

Role of CO₂ and Glycerol in the Formation of Urchin-Like Strontium Carbonate Particles

Role of CO₂ and Glycerol in the Formation of Urchin-Like Strontium Carbonate Particles

Artificial intelligence and response surface methodology to predict CO₂ capture using piperazine‐modified activated alumina