MCM-41 VE MCM-48 Türü Katalizörlerin Üretimi Ve Karakterizasyonu

Year 2010, Volume: 23 Issue: 1, 63 - 81, 30.06.2010

Yeşim Güçbilmez

Abstract

Bu
makalede, mezo-gözenekli, nano-yapılı MCM-41 ve MCM-48 türü katalizörler doğrudan
hidrotermal sentez (DHS) ve oda sıcaklığında sentez (OSS) metotları ile
üretilmiştir. MCM-41 türü katalizörler için her iki sentez metodunun da
başarılı olduğu ve düzgün kristal gözenek yapısına sahip katalizörler
üretildiği görülmüştür. MCM-48 türü katalizörlerin sentezinde ise OSS metodu
ile sentezlenen katalizörün kristal gözenek yapısının önemli ölçüde bozulduğu
görülmüştür. BET sonuçları incelendiğinde, altıgen gözenekli MCM-41
katalizörleri için OSS ve kübik gözenekli MCM-48 katalizörleri için DHS
metodunun daha yüksek yüzey alanı ve gözenek hacmi değerleri verdiği tespit
edilmiştir.

Keywords

Hidrotermal Sentez, MCM-41, MCM-48, Oda Sıcaklığında Sentez

Production And Characterization Of MCM-41 And MCM-48 Type Catalysts

Abstract

In
this paper, mesoporous, nano-structured MCM-41 and MCM-48 type catalysts were
synthesized by direct hydrothermal synthesis (DHS) and room temperature
synthesis (RTS) methods. It was seen for MCM-41 type catalysts that; both DHS
and RTS methods were successful yielding catalysts with regular crystalline
pore structures. In the case of MCM-48 type catalysts, however, the catalyst
produced by the RTS method had significant loss of crystalline pore structure.
Investigation of BET results showed that MCM-41 catalysts synthesized by the
DHS method and MCM-48 catalysts synthesized by the RTS method had higher
surface area and higher pore volume values than their counterparts.

Keywords

: Hydrothermal Synthesis, MCM-41, MCM-48, Room Temperature Synthesis

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