Abstract
The effect of aging time, synthesis temperature and synthesis time on crystallinity and morphology of Na-EU-1 has been studied. Hexamethonium bromide was used as a template to synthesize Na-EU-1 zeolite with Si/Al of 25. In addition, the effect of modification using ion exchange with (NH 4+, Ca2+, Li+ and Ni +) nitrates to replace Na+ was also studied. X-ray diffraction was used to study the phases and the crystallinity of zeolite crystals. Morphology of EU-1 crystals was observed using scanning electron microscope (SEM). Prolonged aging time up to 12 h favored pure phase and crystalline EU-1. It has been found that the optimum synthesis temperature to obtain highly crystalline EU-1 is 190 °C. The shortest synthesis time to obtain crystalline EU-1 at 190 °C is 72 h. Ion exchange reduced the crystallinity of EU-1 crystals. We anticipate that the metal-modified EU-1 is a potential catalyst in numerous reactions such as isomerization and methanol-to-hydrocarbon.
| Original language | English |
|---|---|
| Pages (from-to) | 408-412 |
| Number of pages | 5 |
| Journal | Journal of Alloys and Compounds |
| Volume | 617 |
| DOIs | |
| State | Published - 25 Dec 2014 |
Bibliographical note
Funding Information:The authors would like to thank Mr. Jerwin C. Separa for part of FE-SEM experiments. The authors would like to acknowledge the funding provided by King Abdulaziz City for Science and Technology (KACST) through the Science & Technology Unit in Center of Research Excellence in Nanotechnology at King Fahd University of Petroleum & Minerals (KFUPM) for supporting this work through Project No. 11-NAN2166-04 as part of the National Science, Technology and Innovation Plan.
Keywords
- Aging time
- EU-1
- Ion exchange
- Synthesis temperature
- Synthesis time
ASJC Scopus subject areas
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys
- Materials Chemistry