China Petroleum Chemical Corporation

Shanghai Research Institute of Petrochemical Technology, Sinopec

Zhiqing Yuan

Weimin Yang

Jiawei Teng

Wenhua Fu

Zhendong Wang

Songlin Liu

Weichuan Tao

Jian Qiao

Shengli Zhao

A SCM-33 molecular sieve has a schematic chemical composition as shown in the formula 'SiO·1/x XO·m MO', wherein X is a framework trivalent element, the Si/X molar ratio x is ≥5, M is a framework equilibrium cation, and the M/Si molar ratio is 0<m≤1. The molecular sieve is a novel molecular sieve with RTE topology and the molecular sieve requires short preparation time, involves a low synthesis cost and can be used as adsorbent or catalyst.

SCM-33 molecular sieve, preparation method therefor and application thereof

A SCM-34 molecular sieve, preparation method therefor and use thereof are provided. The SCM-34 molecular sieve contains aluminum, phosphorus, oxygen and optionally silicon. In the XRD diffraction data of the molecular sieve, a 2θ degree of the strongest peak within the range of 5-50° is 7.59±0.2. The SCM-34 molecular sieve has a new skeleton structure and can be used to prepare a metal-containing AFI type molecular sieve or an SAPO-17 molecular sieve.

SCM-34 molecular sieve, preparation method therefor and use thereof

A silicon-and germanium-based molecular sieve has a framework chemical composition as represented by the formula 'SiO2.1/nGeO2'. The silicon/germanium molar ratio is 0.1n30. The molecular sieve has a unique X-ray diffraction pattern. It can be used in adsorptive separation, ion exchange, and catalytic conversion of organic compounds.

Silicon-and germanium-based SCM-25 molecular sieve, preparation process and use thereof

An aluminophosphate molecular sieve SCM-18 has a schematic chemical composition, expressed on a molar basis, of AlO.n PO, in which n represents a phosphorus to aluminum molar ratio, and is in a range of about 0.8-1.2. The aluminophosphate molecular sieve has a unique X-ray diffraction pattern, and can be used as an adsorbent, a catalyst or a catalyst carrier.

Aluminophosphate molecular sieve SCM-18, its preparation and application thereof

A novel silicoaluminophosphate molecular sieve has a schematic chemical composition, expressed on a molar basis, of mSiO&#xb7;AlO&#xb7;nPO, in which m represents the molar ratio of SiOto AlOand is in a range of about 0.005-0.15, and n represents the molar ratio of POto AlOand is in a range of about 0.7-1.1. The silicoaluminophosphate molecular sieve has a unique X-ray diffraction pattern, and can be used as an adsorbent, a catalyst or a catalyst carrier.

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Zhiqing Yuan