Pd/TiO2 KATALİZÖRÜNÜN SENTEZİ VE SODYUM BORHİDRÜRDEN HİDROJEN ÜRETİMİNDE AKTİVİTESİNİN BELİRLENMESİ

MİNE AKGÜN, (Bursa Uludag University, Faculty of Engineering, Textile Engineering Department, Bursa, Turkey)
Fahriye DÖNMEZ, (Eskişehir Teknik Üniversitesi, Mühendislik Fakültesi, Kimya Mühendisliği Bölümü, Eskişehir, Türkiye)
İlsev ULU, (Bursa Uludag University, Faculty of Engineering, Textile Engineering Department, Bursa, Turkey)
Nezihe AYAS, (Eskişehir Teknik Üniversitesi, Mühendislik Fakültesi, Kimya Mühendisliği Bölümü, Eskişehir, Türkiye)
Eda ERKEK (Bursa Uludag University, Faculty of Engineering, Textile Engineering Department, Bursa, Turkey)
Konya mühendislik bilimleri dergisi (Online)
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Yıl: 2021 Cilt: 28 Sayı: 123 Sayfa Aralığı: 66 - 78 Metin Dili: Türkçe DOI: 10.36306/konjes.997854 İndeks Tarihi: 17-02-2022

Pd/TiO2 KATALİZÖRÜNÜN SENTEZİ VE SODYUM BORHİDRÜRDEN HİDROJEN ÜRETİMİNDE AKTİVİTESİNİN BELİRLENMESİ

Öz:
Hidrojen, yenilenebilir enerji kaynaklarından üretilen ve artan enerji talebine sürdürülebilir bir çözüm olabilecek çevre dostu bir enerji taşıyıcısıdır. Hidrojenin depolanması ve iletimi için metal borhidrürler depolama kapasiteleri ile öne çıkmaktadır. Bu çalışmada, sol-jel yöntemi ile Pd/TiO2 katalizörü sentezlenmiş ve X-Işınları difraktometresi (XRD), Brunauer, Emmett-Teller (BET), X-Işınları Floresans (XRF) ve Taramalı Elektron Mikroskobu-Enerji Dağılımlı X-Işınları (SEM-EDX) teknikleri ile karakterize edilmiştir. Katalizörün aktivite çalışmaları hidrojen üretmek amacıyla NaBH4’ün hidroliz reaksiyonunda gerçekleştirilmiştir. Deneysel çalışma koşulları 100 mg NaBH4, 100 mg katalizör, 5 mL 0,25 M NaOH olarak belirlenmiş ve üç farklı reaksiyon sıcaklığı (20, 40 ve 60 oC) denenmiştir. En yüksek hidrojen verimi (%100) ve hidrojen üretim hızı (102 mL/gkat.dk) 60 oC reaksiyon sıcaklığında elde edilmiştir. Katalizörün tekrar kullanılabilirlik testlerinde ilk 4 kullanımdan sonra aktivitesinde azalma olduğu gözlenmiştir. NaBH4 hidrolizi reaksiyonuna n. derecede reaksiyon kinetiği modeli uygulanarak reaksiyon hız derecesi 0,7 olarak belirlenmiştir. Arrhenius eşitliği ile aktivasyon enerjisi 33,23 kJ/mol olarak hesaplanmıştır.
Anahtar Kelime:

JAKARLI DOKUMA KUMAŞ DESENİNDE KULLANILAN İPLİK ÖZELLİKLERİNİN VE KONUMLARININ AŞINMA DİRENCİNE ETKİSİ

Öz:
Dokuma kumaşların üretim parametrelerinin kumaşların kullanım performanslarına etkileri iyi bilinmeli ve kullanım sırasında çıkabilecek problemler önceden tahmin edilip giderilmeye çalışılmalıdır. Bu çalışma kapsamında jakarlı dokuma kumaşlarda desen efektlerinde kullanılan farklı özellikteki atkı ipliklerinin yüzey aşınma performansına etkisi incelenmiştir. Bu amaçla farklı atkı ipliği özelliklerine (iplik numarası, iplik tipi; filament iplik, kesikli iplik ve çeken iplik) sahip kontrollü jakar desenli kumaş üretimi yapılmıştır. Sonuçlar farklı aşınma devirlerinde ve büyütme oranlarında mikroskop görüntüleri çekilerek değerlendirilmiştir. Elde edilen sonuçlar aşınma öncesi ve sonrası kumaş yüzeyinin pürüzlülük değerleriyle karşılaştırılarak değerlendirilmiştir. İplik özelliklerinin ve iplik kıvrım miktarının, kumaşların aşınma direncini etkilediği gözlenmiştir.
Anahtar Kelime:

THE EFFECT OF PROPERTIES AND POSITIONING OF YARNS USED IN JACQUARD WOVEN FABRIC PATTERN ON ABRASION RESISTANCE

Öz:
The effects of the woven fabrics' design parameters on the usage performances are well known, and the problems that may arise during use should be predicted and solved. In this study, the effect of different weft yarn properties, which were used to create a texture effect on the weave pattern, was investigated on the surface abrasion performance of fabrics. For this purpose, controlled jacquard fabric samples woven with different weft yarn properties (yarn linear density and yarn types such as; filament yarn, staple fiber yarn, and textured shrinkage yarn) were used. Results were evaluated by taking microscopic images before and after the abrasion process for different abrasion cycles. These results were also assessed by comparing the surface roughness values of fabric surfaces before and after abrasion. Experimental results showed that yarn properties and amount of yarn crimp affect the abrasion resistance of fabrics.
Anahtar Kelime:

Synthesis of Pd/TiO2 Catalyst and Determination of Its Activity in Hydrogen Production from Sodium Borohydride

Öz:
Hydrogen is an environmentally friendly energy carrier that can be a sustainable solution to the increasing energy demand, produced from renewable energy sources. For the storage and transmission of hydrogen, metal borohydrides stand out with their hydrogen storage capacities. In this study, Pd/TiO2 catalyst was synthesized by sol-gel method and characterized by X-Ray Diffractometry (XRD), Brunauer, Emmett-Teller (BET), X-Ray Fluorescence (XRF), Scanning Electron Microscope- Energy Dispersive X‑Ray (SEM-EDX) techniques. The activity studies of the synthesized catalyst were carried out in the hydrolysis reaction of NaBH4 to produce hydrogen. Experimental studying conditions were determined as 100 mg NaBH4, 100 mg catalyst, 5 mL 0.25 M NaOH and three different reaction temperature parameters (20, 40 and 60 oC) were tested. The highest hydrogen yield (100%) and hydrogen production rate (102 mL/gcat.min) were obtained at 60 oC reaction temperature. In the reusability tests of the catalyst, a decrease in activity was observed after the first 4 uses. By applying the nth order reaction kinetics model to the NaBH4 hydrolysis reaction, the reaction rate degree was determined to be 0.7. The activation energy was calculated as 33.23 kJ/mol with the Arrhenius equation.
Anahtar Kelime:

Belge Türü: Makale Makale Türü: Araştırma Makalesi Erişim Türü: Erişime Açık
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APA DÖNMEZ F, Akgun M, Ayas N, Ulu Aydinalp I, ERKEK E (2021). Pd/TiO2 KATALİZÖRÜNÜN SENTEZİ VE SODYUM BORHİDRÜRDEN HİDROJEN ÜRETİMİNDE AKTİVİTESİNİN BELİRLENMESİ. , 66 - 78. 10.36306/konjes.997854
Chicago DÖNMEZ FAHRİYE,Akgun Mine,Ayas Nezihe,Ulu Aydinalp Ilsev,ERKEK EDA Pd/TiO2 KATALİZÖRÜNÜN SENTEZİ VE SODYUM BORHİDRÜRDEN HİDROJEN ÜRETİMİNDE AKTİVİTESİNİN BELİRLENMESİ. (2021): 66 - 78. 10.36306/konjes.997854
MLA DÖNMEZ FAHRİYE,Akgun Mine,Ayas Nezihe,Ulu Aydinalp Ilsev,ERKEK EDA Pd/TiO2 KATALİZÖRÜNÜN SENTEZİ VE SODYUM BORHİDRÜRDEN HİDROJEN ÜRETİMİNDE AKTİVİTESİNİN BELİRLENMESİ. , 2021, ss.66 - 78. 10.36306/konjes.997854
AMA DÖNMEZ F,Akgun M,Ayas N,Ulu Aydinalp I,ERKEK E Pd/TiO2 KATALİZÖRÜNÜN SENTEZİ VE SODYUM BORHİDRÜRDEN HİDROJEN ÜRETİMİNDE AKTİVİTESİNİN BELİRLENMESİ. . 2021; 66 - 78. 10.36306/konjes.997854
Vancouver DÖNMEZ F,Akgun M,Ayas N,Ulu Aydinalp I,ERKEK E Pd/TiO2 KATALİZÖRÜNÜN SENTEZİ VE SODYUM BORHİDRÜRDEN HİDROJEN ÜRETİMİNDE AKTİVİTESİNİN BELİRLENMESİ. . 2021; 66 - 78. 10.36306/konjes.997854
IEEE DÖNMEZ F,Akgun M,Ayas N,Ulu Aydinalp I,ERKEK E "Pd/TiO2 KATALİZÖRÜNÜN SENTEZİ VE SODYUM BORHİDRÜRDEN HİDROJEN ÜRETİMİNDE AKTİVİTESİNİN BELİRLENMESİ." , ss.66 - 78, 2021. 10.36306/konjes.997854
ISNAD DÖNMEZ, FAHRİYE vd. "Pd/TiO2 KATALİZÖRÜNÜN SENTEZİ VE SODYUM BORHİDRÜRDEN HİDROJEN ÜRETİMİNDE AKTİVİTESİNİN BELİRLENMESİ". (2021), 66-78. https://doi.org/10.36306/konjes.997854
APA DÖNMEZ F, Akgun M, Ayas N, Ulu Aydinalp I, ERKEK E (2021). Pd/TiO2 KATALİZÖRÜNÜN SENTEZİ VE SODYUM BORHİDRÜRDEN HİDROJEN ÜRETİMİNDE AKTİVİTESİNİN BELİRLENMESİ. Konya mühendislik bilimleri dergisi (Online), 28(123), 66 - 78. 10.36306/konjes.997854
Chicago DÖNMEZ FAHRİYE,Akgun Mine,Ayas Nezihe,Ulu Aydinalp Ilsev,ERKEK EDA Pd/TiO2 KATALİZÖRÜNÜN SENTEZİ VE SODYUM BORHİDRÜRDEN HİDROJEN ÜRETİMİNDE AKTİVİTESİNİN BELİRLENMESİ. Konya mühendislik bilimleri dergisi (Online) 28, no.123 (2021): 66 - 78. 10.36306/konjes.997854
MLA DÖNMEZ FAHRİYE,Akgun Mine,Ayas Nezihe,Ulu Aydinalp Ilsev,ERKEK EDA Pd/TiO2 KATALİZÖRÜNÜN SENTEZİ VE SODYUM BORHİDRÜRDEN HİDROJEN ÜRETİMİNDE AKTİVİTESİNİN BELİRLENMESİ. Konya mühendislik bilimleri dergisi (Online), vol.28, no.123, 2021, ss.66 - 78. 10.36306/konjes.997854
AMA DÖNMEZ F,Akgun M,Ayas N,Ulu Aydinalp I,ERKEK E Pd/TiO2 KATALİZÖRÜNÜN SENTEZİ VE SODYUM BORHİDRÜRDEN HİDROJEN ÜRETİMİNDE AKTİVİTESİNİN BELİRLENMESİ. Konya mühendislik bilimleri dergisi (Online). 2021; 28(123): 66 - 78. 10.36306/konjes.997854
Vancouver DÖNMEZ F,Akgun M,Ayas N,Ulu Aydinalp I,ERKEK E Pd/TiO2 KATALİZÖRÜNÜN SENTEZİ VE SODYUM BORHİDRÜRDEN HİDROJEN ÜRETİMİNDE AKTİVİTESİNİN BELİRLENMESİ. Konya mühendislik bilimleri dergisi (Online). 2021; 28(123): 66 - 78. 10.36306/konjes.997854
IEEE DÖNMEZ F,Akgun M,Ayas N,Ulu Aydinalp I,ERKEK E "Pd/TiO2 KATALİZÖRÜNÜN SENTEZİ VE SODYUM BORHİDRÜRDEN HİDROJEN ÜRETİMİNDE AKTİVİTESİNİN BELİRLENMESİ." Konya mühendislik bilimleri dergisi (Online), 28, ss.66 - 78, 2021. 10.36306/konjes.997854
ISNAD DÖNMEZ, FAHRİYE vd. "Pd/TiO2 KATALİZÖRÜNÜN SENTEZİ VE SODYUM BORHİDRÜRDEN HİDROJEN ÜRETİMİNDE AKTİVİTESİNİN BELİRLENMESİ". Konya mühendislik bilimleri dergisi (Online) 28/123 (2021), 66-78. https://doi.org/10.36306/konjes.997854
Sayfa Oluşturulma Tarihi
17-04-2024 23:26

İLETİŞİM

TÜBİTAK ULAKBİM TR Dizin

Yüzüncüyıl, İşçi Blokları Mahallesi

Muhsin Yazıcıoğlu Caddesi No:51/C

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