UKURAN PARTIKEL DAN KONFORMASI KRISTAL ZEOLIT-A HASIL SINTESIS DENGAN PENAMBAHAN   TETRAPROPILAMMONIUM HIDROKSIDA (TPAOH)

Nurul Widiastuti; Farhanah Thalib; Didik Prasetyoko; Hamzah Fansuri

doi:10.14710/reaktor.15.2.132-138

DOI: https://doi.org/10.14710/reaktor.15.2.132-138

UKURAN PARTIKEL DAN KONFORMASI KRISTAL ZEOLIT-A HASIL SINTESIS DENGAN PENAMBAHAN TETRAPROPILAMMONIUM HIDROKSIDA (TPAOH)

*Nurul Widiastuti - Chemistry Department, Indonesia

Farhanah Thalib - Department of Chemistry

Didik Prasetyoko - Department of Chemistry, Indonesia

Hamzah Fansuri - Department of Chemistry

Published: 21 Nov 2014.

BibTex Citation Data :

@article{Reaktor8402,
    author = {Nurul Widiastuti and Farhanah Thalib and Didik Prasetyoko and Hamzah Fansuri},
    title = {UKURAN PARTIKEL DAN KONFORMASI KRISTAL ZEOLIT-A HASIL SINTESIS DENGAN PENAMBAHAN   TETRAPROPILAMMONIUM HIDROKSIDA (TPAOH)},
    journal = {Reaktor},
  volume = {15},
    number = {2},
    year = {2014},
    keywords = {average size of particles; crystal conformation; TPAOH; zeolite A},
    abstract = {  Abstract       PARTICLE SIZE AND CRYSTAL CONFORMATION   OF   SYNTHESIZED ZEOLITE-A    WITH   TETRAPROPYLAMMONIUM HYDROXIDE (TPAOH) ADDITION.   The aims of this research is to study the effect of tetrapropylammonium hydroxide (TPAOH) concentration   i  n   the   synthesis of zeolite A   to its physical characteristics such as crystallinity, crystal conformation and average crystal size  .   The   zeolite A was synthesized with composition 3  .  165     Na 2 O     : 1  .000   Al 2 O 3     :     1  .  926     SiO 2     :     128     H 2 O     :     x     TPAOH   where x   was 0; 0.0385; 0.0577; 0.0770; 0.1540 and 4.1602.   The zeolite was crystalized under h  ydrothermal   condition in a stainless steel autoclave   at 100°C   for   5 hours  .     T  he   resulting crystal   was washed   with distilled water   until pH 8   and then dried in an oven at 80 o C for 24 hours  . FT-IR and XRD   analysis results   show that the synthesized zeolite A at   x =   4.1602 has the lowest crystal  l  i  ni  ty. It is   estimated du  e   to   the mass of TPAOH was four times   h  igger than the mass of zeolite framework   components   (Si   and   Al). SEM and PSD   (Particle Size Distribution) analysis results show that   TPAOH concentration affected the crystal conformation and the average size of   zeolite A   particles. The formation of chain  ed   crystal conformation was caused by the electrostatic interactions between TPA +  and negatively charge of zeolite framework. In addition, the particel size of the synthesized zeolite A at   x =   0.1540 was 2.024 µm   which   was smaller than the particel size of the synthesized zeolite A without TPAOH, which was 3.534 µm.          Keywords:   average size of particles  ;   crystal conformation  ;     TPAOH  ;   zeolite A          Abstrak       Penelitian ini bertujuan untuk mempelajari pengaruh konsentrasi TPAOH (Tetrapropilamonium hidroksida) dalam sintesis zeolit A   terhadap sifat fisikanya yang meliputi kekristalan, konformasi kristal dan ukuran rata-rata kristal yang terbentuk  .   Pada   penelitian   ini   zeolit A   disintesis    dengan komposisi 3,165     Na 2 O : 1     Al 2 O 3  : 1,926     SiO 2  :128     H 2 O: x     TPAOH. Konsentrasi TPAOH divariasikan dengan nilai x adalah 0; 0,0385; 0,0577; 0,0770; 0,1540 dan 4,1602. Metode hidrotermal digunakan dalam penelitian ini dengan kondisi suhu  hidrotermal 100°C dan waktu kristalisasi selama 5 jam dengan pH pencucian 8. Hasil karakterisasi menggunakan FT-IR (Fourier Transform – Infrared Spectroscopy) dan XRD (X-Ray Diffraction)  menunjukkan bahwa zeolit A yang disintesis dengan   x =   4,1602 memiliki   ke  kristal  an   terendah. Hal ini   diperkirakan terjadi   karena masa TPAOH yang digunakan empat kali lebih besar daripada masa penyusun zeolit (Si   dan   Al). Berdasarkan hasil karakterisasi menggunakan SEM (Scanning Electron Microscopy) dan PSD (Particle Size Distribution), dapat diketahui bahwa TPAOH berpengaruh terhadap konformasi kristal dan rata-rata ukuran   kristalnya  .  Terbentuknya konformasi kristal seperti rantai disebabkan oleh adanya interaksi elektrostatik antara muatan   positif pada   TPA +  dan muatan negatif dari kerangka zeolit.   Z  eolit A yang disintesis dengan   x =   0,1540 memiliki ukuran partikel rata-rata 2,024 µm yang lebih kecil   dari   daripada zeolit A tanpa TPAOH   yaitu sebesar   3,534 µm.      Kata kunci :   ukuran partakel rata-rata; konformasi kristal; TPAOH; zeolite A       },
   issn = {2407-5973},   pages = {132--138}  doi = {10.14710/reaktor.15.2.132-138},
    url = {https://ejournal.undip.ac.id/index.php/reaktor/article/view/8402}
}

Citation Format:

Abstract

PARTICLE SIZE AND CRYSTAL CONFORMATION OF SYNTHESIZED ZEOLITE-A WITH TETRAPROPYLAMMONIUM HYDROXIDE (TPAOH) ADDITION. The aims of this research is to study the effect of tetrapropylammonium hydroxide (TPAOH) concentration in the synthesis of zeolite A to its physical characteristics such as crystallinity, crystal conformation and average crystal size. The zeolite A was synthesized with composition 3.165 Na₂O : 1.000 Al₂O₃: 1.926 SiO₂: 128 H₂O : x TPAOH where x was 0; 0.0385; 0.0577; 0.0770; 0.1540 and 4.1602. The zeolite was crystalized under hydrothermal condition in a stainless steel autoclave at 100°C for 5 hours. The resulting crystal was washed with distilled water until pH 8 and then dried in an oven at 80^oC for 24 hours. FT-IR and XRD analysis results show that the synthesized zeolite A at x = 4.1602 has the lowest crystallinity. It is estimated due to the mass of TPAOH was four times higger than the mass of zeolite framework components (Si and Al). SEM and PSD (Particle Size Distribution) analysis results show that TPAOH concentration affected the crystal conformation and the average size of zeolite A particles. The formation of chained crystal conformation was caused by the electrostatic interactions between TPA⁺ and negatively charge of zeolite framework. In addition, the particel size of the synthesized zeolite A at x = 0.1540 was 2.024 µm which was smaller than the particel size of the synthesized zeolite A without TPAOH, which was 3.534 µm.

Keywords: average size of particles; crystal conformation; TPAOH; zeolite A

Abstrak

Penelitian ini bertujuan untuk mempelajari pengaruh konsentrasi TPAOH (Tetrapropilamonium hidroksida) dalam sintesis zeolit A terhadap sifat fisikanya yang meliputi kekristalan, konformasi kristal dan ukuran rata-rata kristal yang terbentuk. Pada penelitian ini zeolit A disintesis dengan komposisi 3,165 Na₂O : 1 Al₂O₃: 1,926 SiO₂:128 H₂O: x TPAOH. Konsentrasi TPAOH divariasikan dengan nilai x adalah 0; 0,0385; 0,0577; 0,0770; 0,1540 dan 4,1602. Metode hidrotermal digunakan dalam penelitian ini dengan kondisi suhu hidrotermal 100°C dan waktu kristalisasi selama 5 jam dengan pH pencucian 8. Hasil karakterisasi menggunakan FT-IR (Fourier Transform – Infrared Spectroscopy) dan XRD (X-Ray Diffraction) menunjukkan bahwa zeolit A yang disintesis dengan x = 4,1602 memiliki kekristalan terendah. Hal ini diperkirakan terjadi karena masa TPAOH yang digunakan empat kali lebih besar daripada masa penyusun zeolit (Si dan Al). Berdasarkan hasil karakterisasi menggunakan SEM (Scanning Electron Microscopy) dan PSD (Particle Size Distribution), dapat diketahui bahwa TPAOH berpengaruh terhadap konformasi kristal dan rata-rata ukuran kristalnya. Terbentuknya konformasi kristal seperti rantai disebabkan oleh adanya interaksi elektrostatik antara muatan positif pada TPA⁺ dan muatan negatif dari kerangka zeolit. Zeolit A yang disintesis dengan x = 0,1540 memiliki ukuran partikel rata-rata 2,024 µm yang lebih kecil dari daripada zeolit A tanpa TPAOH yaitu sebesar 3,534 µm.

Kata kunci : ukuran partakel rata-rata; konformasi kristal; TPAOH; zeolite A

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Keywords: average size of particles; crystal conformation; TPAOH; zeolite A

Funding: Direktorat Jenderal Pendidikan Tinggi, Indonesia

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Article Info

Section: Research Article

Language : EN

In Volume 15, No.2, OKTOBER 2014

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