Journals / Eskişehir Osmangazi Üniversitesi Mühendislik Mimarlık Fakültesi Dergisi / 2007 / Cilt: 20 - Sayı: 2

Determination of heats of immersion from Gördes region clinoptilolite and its ion- exchanged forms

Gördes yöresi klinoptilolit ve iyon değiştirilmiş formlarının ıslanma ısıları tayini

Pages
107–120
Publication Date
2022-10-18
DOI
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AI Summary & Key Takeaways

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⚡ TL;DR(Too Long; Didn't Read)

Finally, it was found that modified cationic species influence the value of the immersion heat and for both cases; the use of $Ca^{2+}$- forms with higher immersion heat values compared to $Na^+$- forms is much more suitable as a heat changer.

📌 3 Key Takeaways

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Objective & Hypothesis:In this study, immersion heats of clinoptilolite (CL) obtained from Gördes region and its cat ionic forms (CLNa1, CLNa2, CLCal ve CLCa2) were determined using Calvet calorimeter at 30 °C.
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Key Findings & Data:Cationic forms were prepared using 1M NaCl (CLNa1), 1M Na(NO3) (CLNa2), 1M CaCl2 (CLCa1) ve 1M Ca(NO3)2 (CLCa2) solutions.
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Conclusion & Impact:Finally, it was found that modified cationic species influence the value of the immersion heat and for both cases; the use of $Ca^{2+}$- forms with higher immersion heat values compared to $Na^+$- forms is much more suitable as a heat changer.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

In this study, immersion heats of clinoptilolite (CL) obtained from Gördes region and its cat ionic forms (CLNa1, CLNa2, CLCal ve CLCa2) were determined using Calvet calorimeter at 30 °C. Natural clinoptilolite and their modified forms were characterized by XRD, DTA and TGA methods. Cationic forms were prepared using 1M NaCl (CLNa1), 1M Na(NO3) (CLNa2), 1M CaCl2 (CLCa1) ve 1M Ca(NO3)2 (CLCa2) solutions. Among-the immersion heals of modified clinoptilolite samples obtained by both 1M Na- ve Ca-chloride solutions and IM Na- ve Ca-nitrate solutions, it was seen that the immersion heats of $Ca^{2+}$ -forms (CLCa1 (864 J/g) ve CLCa2 (431 J/g)) have higher values than those of $Na^+$- forms (CLNa1 (327 J/g) ve CLNa2 (91 J/g)). Finally, it was found that modified cationic species influence the value of the immersion heat and for both cases; the use of $Ca^{2+}$- forms with higher immersion heat values compared to $Na^+$- forms is much more suitable as a heat changer.

Özet

Bu çalışmada doğal Gördes klinoptiloliti (CL) ve iyon değiştirilmiş formlarının (CLNa1, CLNa2, CLCal ve CLCa2) ıslanma ısıları, 30 C'de Calvet kalorimetresi ile ölçülmüştür. Doğal ve iyon değiştirilmiş formlar XRD, DTA ve TGA yöntemleri ile karakterize edilmiştir. Katyonik formlar 1M NaCl (CLNa1), 1M Na(NO3) (CLNa2), 1M CaCl2 (CLCa1) ve 1M Ca(NO3)2 (CLCa2) çözeltileri kullanılarak hazırlanmıştır.Kiinoptilolit numunelerinin hem 1M Na- ve Ca- klorür çözeltileri ve hem de 1M Na- ve Ca-nitrat çözeltileri ile modifiye edilen formlarında, $Ca^{+2}$-formlarının ıslanma ısılarının (CLCa1 (864 J/g) ve CLCa2 (431 J/g)), $Na^+$-formlarının ıslanma ısılarından (CLNa1 (327 J/g) ve CLNa2 (91 J/g)) daha büyük oldukları belirlenmiştir. Böylece değiştirilen katyon türünün ıslanma ısısı değerleri üzerinde etkiye sahip olduğu ve her iki durumda da klinoptilolitin Na+-formuna göre daha büyük ıslanma ısısına sahip olan $Ca^{+2}$-formunun, ısı değiştirici olarak kullanılmasının daha uygun olduğu bulunmuştur.

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Cite This Article

SAKIZCI, M., YÖRÜKOĞULLARI, E., ERDOĞAN, B. (2022). Determination of heats of immersion from Gördes region clinoptilolite and its ion- exchanged forms. Eskişehir Osmangazi Üniversitesi Mühendislik Mimarlık Fakültesi Dergisi, Cilt: 20 - Sayı: 2, 107–120. https://ajindex.com/articles/505869

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