China Petroleum Chemical Corporation

Dalian Research Institute of Petroleum and Petrochemicals, Sinopec Corp.

Sinopec Dalian Research Institute of Petroleum and Petrochemicals Co., Ltd.

Huixia Ma

Kai Qiao

Shumei Zhang

Feng Zhou

Qingtong Zhai

Jie Su

Xiuna Yang

Ping Jin

Shaozhong Peng

Rui Jiang

A process for producing propylene involves dehydration of isopropanol. The dehydration process includes a step of subjecting a starting material containing isopropanol to a dehydration reaction in the presence of a dehydration catalyst comprising alumina to produce a product containing propylene. The starting material has a water content of 0.1 to 10.0 wt % (relative to 100 wt % of the total mass of the starting material), and the product has a total content of C2 unsaturated impurities and C3-C4 unsaturated impurities of 80 ppm or less (relative to 100 wt % of the total mass of the product).

Preparation method and production device for propylene

The present invention relates to a preparation process for a Cu-based catalyst and use of the Cu-based catalyst as the dehydrogenation catalyst in producing a hydroxyketone compound such as acetoin. Said Cu-based catalyst shows a high the acetoin selectivity as the dehydrogenation catalyst for producing acetoin.

Preparation process for Cu-based catalyst and use thereof

The present invention relates to a Cu-based catalyst, a preparation process thereof and its use as the dehydrogenation catalyst in producing a hydroxyketone compound such as acetoin. Said Cu-based catalyst contains copper, at least one auxiliary metal selected from metal of Group IIA, non-noble metal of Group VIII, metal of Group VIB, metal of Group VIIB, metal of Group IIB and lanthanide metal of periodic table of elements, and an alkali metal, and further contains at least one ketone additive selected from a ketone represented by formula (II) and a ketone represented by formula (II'). Said Cu-based catalyst shows a high the acetoin selectivity as the dehydrogenation catalyst for producing acetoin.R1-C(&#x2550;O)&#x2014;CH(OH)&#x2014;R2&#x2003;&#x2003;(II)R1-C(&#x2550;O)&#x2014;CH(&#x2550;O)&#x2014;R2&#x2003;&#x2003;(II&#x2032;) In formulae (II) and (II&#x2032;), each group is defined as in the description.

Cu-based catalyst, its preparation process and use thereof

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Liaoning, China

Huixia Ma