Investigation of the Strong Bronsted Acidity in a Novel SAPO-type Molecular Sieve, DNL-6
文献类型：期刊论文
| 作者 | Su, Xiong1; Xu, Shutao1; Tian, Peng1; Li, Jinzhe1; Zheng, Anmin3; Wang, Qiang3; Yang, Miao1; Wei, Yingxu1; Deng, Feng3; Liu, Zhongmin1,2 |
| 刊名 | journal of physical chemistry c
 |
| 出版日期 | 2015-02-05 |
| 卷号 | 119期号:5页码:2589-2596 |
| 英文摘要 | by applying analysis of multiple solid-state mas nmr spectra, the atomic coordination environment and acidity of a novel sapo-type molecular sieve, dnl-6, are studied. 27al mq-mas nmr and 31p27al mq-hetcor nmr spectra reveal the existence of a sialsi region with al(osi)n (n = 14) species in the framework of dnl-6, explaining well the high concentration of single si(oal)4 species (3 mmol/g) accommodated in the sample. 13c mas nmr of 2-13c-acetone adsorption indicates that there exist two kinds of strong bronsted acid sites in dnl-6. one of them has similar strength as those in hzsm-5 and the other is even stronger, which is unusual in sapo-type molecular sieves. also, a discrepancy in bronsted acid concentration between the theoretical and 1h nmr experimental results has been found, revealing the occurrence of a dehydoxylation process during the calcination. the origin of the extremely strong bronsted acid sites in dnl-6 is investigated by density functional theory calculations, which suggest that the dehydroxylation process may lead to a local structure deformation and remarkably enhance the bronsted acidity. more importantly, dnl-6 exhibits excellent catalytic activity in the synthesis of methylamines due to its stronger acidity. |
| WOS标题词 | science & technology ; physical sciences ; technology |
| 类目[WOS] | chemistry, physical ; nanoscience & nanotechnology ; materials science, multidisciplinary |
| 研究领域[WOS] | chemistry ; science & technology - other topics ; materials science |
| 关键词[WOS] | solid-state nmr ; angle-spinning nmr ; resolution heteronuclear correlation ; different framework topologies ; heterogeneous catalysis ; quadrupolar nuclei ; zeolites ; spectroscopy ; silicoaluminophosphates ; chemistry |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000349136400040 |
| 公开日期 | 2016-05-09 |
| 源URL | [http://cas-ir.dicp.ac.cn/handle/321008/145979]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 作者单位 | 1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Natl Engn Lab Methanol Olefins, Dalian 116023, Peoples R China 2.Chinese Acad Sci, Sate Key Lab Catalysis, Dalian Inst Chem Phys, Dalian 116023, Peoples R China 3.Chinese Acad Sci, State Key Lab Magnet Resonance and Atom Mol Phys, Wuhan Ctr Magnet Resonance, Inst Phys & Math, Wuhan 430071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Su, Xiong,Xu, Shutao,Tian, Peng,et al. Investigation of the Strong Bronsted Acidity in a Novel SAPO-type Molecular Sieve, DNL-6[J]. journal of physical chemistry c,2015,119(5):2589-2596. |
| APA | Su, Xiong.,Xu, Shutao.,Tian, Peng.,Li, Jinzhe.,Zheng, Anmin.,...&Liu, Zhongmin.(2015).Investigation of the Strong Bronsted Acidity in a Novel SAPO-type Molecular Sieve, DNL-6.journal of physical chemistry c,119(5),2589-2596. |
| MLA | Su, Xiong,et al."Investigation of the Strong Bronsted Acidity in a Novel SAPO-type Molecular Sieve, DNL-6".journal of physical chemistry c 119.5(2015):2589-2596. |
入库方式： OAI收割
来源：大连化学物理研究所
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