On the Choice of Ion Exchange Method for FAU Type Zeolite to Synthesize an Active and Selective Catalyst for Isobutane Alkylation with Butylenes
Gerzeliev, IM; Ostroumova, VA; Baskhanova, MN; Saitov, ZA; Temnikova, VA; Khusaimova, DO
| HERO ID | 4741943 |
|---|---|
| In Press | No |
| Year | 2017 |
| Title | On the Choice of Ion Exchange Method for FAU Type Zeolite to Synthesize an Active and Selective Catalyst for Isobutane Alkylation with Butylenes |
| Authors | Gerzeliev, IM; Ostroumova, VA; Baskhanova, MN; Saitov, ZA; Temnikova, VA; Khusaimova, DO |
| Journal | Petroleum Chemistry |
| Volume | 57 |
| Issue | 12 |
| Page Numbers | 1182-1185 |
| Abstract | A comparative study of the trends in ion exchange of NaX zeolite (molar ratio Si/Al = 1.34) pelletized without binder has been performed using successive treatment with calcium, lanthanum, and ammonium nitrate solutions at 80A degrees C with intermediate calcination after each ion exchange stage or by ion exchange in an autoclave at 180A degrees C with calcium nitrate and lanthanum and ammonium nitrate solutions without intermediate calcinations. It has been found that for the complete replacement of sodium cations in the zeolite framework (less than 1 wt % residual sodium oxide), a fourfold ion exchange at 80A degrees C with vigorous stirring and intermediate calcinations or a twofold ion exchange at 180A degrees C in an autoclave without intermediate calcinations is required. Comparison of the physicochemical and catalytic properties of the obtained catalyst samples with almost identical chemical composition has shown a significant advantage of ion exchange in the autoclave, since the zeolite retains its initial structural characteristics. |
| Doi | 10.1134/S0965544117060147 |
| Wosid | WOS:000425317400033 |
| Is Certified Translation | No |
| Dupe Override | No |
| Is Public | Yes |
| Keyword | ion exchange; NaX zeolite; autoclave; alkylation; isobutane; butylene; porous structure; acidity; X-ray diffraction phase analysis |