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| Content Provider | Springer Nature Link |
|---|---|
| Author | Yao, Pengxu Wang, Yaquan Zhang, Teng Wang, Shuhai Wu, Xiaoxue |
| Copyright Year | 2014 |
| Abstract | Titanium silicalite-1 (TS-1) has been hydrothermally synthesized with tetrapropylammonium hydroxide (TPAOH) as the template in the presence of various amounts of Na$^{+}$, characterized by inductively coupled plasma, X-ray diffraction, scanning electron microscope, X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy and ultro-violet-visible spectroscopy and studied in cyclohexanone ammoximation. The characterization results show that with the increase of Na$^{+}$ concentration in the synthesis, both the crystal sizes of TS-1 and extra framework Ti increase but framework Ti decreases. The addition of Na$^{+}$ below 3 mol-% of TPAOH in the synthesis does not influence the catalytic properties with above 98% conversion of cyclohexanone and 99.5% selectivity to cyclohexanone oxime. However, at the concentrations of Na$^{+}$⩾3mol-% of TPAOH in the synthesis, the catalysts are deactivated faster with the increase of Na$^{+}$ addition, which can be attributed to more high molecular weight byproducts deposited in the large TS-1 particles and the loss of the frame-work titanium. The results of this work are of great importance for the industry. |
| Starting Page | 149 |
| Ending Page | 155 |
| Page Count | 7 |
| File Format | |
| ISSN | 20950179 |
| Journal | Frontiers of Chemical Engineering in China |
| Volume Number | 8 |
| Issue Number | 2 |
| e-ISSN | 20950187 |
| Language | English |
| Publisher | Higher Education Press |
| Publisher Date | 2014-01-29 |
| Publisher Institution | Chinese Universities |
| Publisher Place | Heidelberg |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | titanium silicalite-1 sodium ion crystal size extra framework Ti cyclohexanone ammoximation Industrial Chemistry/Chemical Engineering Nanotechnology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Chemical Engineering |
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