Petrochina Company Limited

Beijing Baidu Netcom Science Technology Co., Ltd

Weisong Cui

Jianjun Yi

Zhifei Li

Wei Liu

Hao Wang

Wei Bai

Jie Hu

Yuan Yuan

Zhi Peng Liu

Jian Huang

Liang Cui

Hongming Li

Mingge Zhang

Kefeng Wang

Qigu Huang

Yisen Wang

Kuilong Tan

Pu Xu

Rongbo Li

Xingfeng Chen

Qinghong Xu

Xinyuan Liu

Wanqing Ju

Quanbin Li

Weixiang Ma

Guangkui Cai

Jiao Chen

Liqun Zhou

Shunhui Tang

Provided are an image display method and apparatus, an electronic device, and a medium, which relate to the field of computer technologies, in particular to the fields of cloud phones, cloud computing and cloud services. The specific implementation scheme is as follows: generating a simulated external display of a cloud device according to an acquired target resolution of a target client; and generating frame buffer data according to a frame buffer area of the simulated external display in the cloud device, and sending the frame buffer data to the target client so that the target client performs image display on a target interface according to the frame buffer data.

Image display method and apparatus, and medium

A magnesium alkoxide catalyst support and the preparation method and use thereof are provided. The method for preparing the magnesium alkoxide catalyst support comprises the following steps: mixing a metallic magnesium, a monohydric alcohol, a halogenating agent and a surfactant at 0&#xb0; C. to 90&#xb0; C. under an inert gas atmosphere, and then washing the resultant with an inert solvent to obtain the magnesium alkoxide catalyst support. A magnesium alkoxide catalyst support obtained by the above method is also provided, which can be used to catalyze olefin polymerization. The magnesium alkoxide catalyst support obtained by the above method according to the invention has excellent particle morphology and controllable size, and is suitable for preparing a catalyst for olefin polymerization.

Magnesium alkoxide catalyst support and the preparation method and use thereof

The present invention relates to preparation and application of an olefin polymerization catalyst. The main catalyst is composed of a carrier, a transition metal halide, and an organic alcohol compound. The transition metal halide is obtained by in-situ reaction between titanate and silicon halide. The molar ratio of the carrier to the transition metal halide to the organic alcohol compound is 1 to 0.01-20 to 0.1-6. The molar ratio of the titanate to the silicon halide is 1 to 0.5-2. The co-catalyst is an organo-aluminum compound. The molar ratio of the transition metal halide in the main catalyst to the co-catalyst is 1 to 30-500. Particles of the catalyst are good in morphology and are in a spherical shape. The catalyst has high activity and the polymer obtained by using the catalyst has a high molecular weight. The catalyst is applicable to a slurry method, a vapor phase polymerization process, or a combined polymerization process. The preparation method thereof is simple, has low requirements on devices, and produces little pollution on the environment.

Olefin polymerization catalyst and preparation and application thereof

Disclosed is a catalyst for the polymerization of olefins comprising thienyl-substituted silanes, which comprises a solid titanium catalyst component containing titanium, magnesium and a halogen as the main components, an alkylaluminum compound, and a component of organosiloxane compound comprising two thienyl as substituents represented by general formula (I). The molar ratio of each catalyst component is 1:50-150:5-50 based on titanium:aluminum:silicon. When the catalyst is used in the polymerization of propylene, the polymerisate obtained has a very high degree of isotacticity, and the yield is high. 

Catalyst for polymerization of olefins comprising thienyl-substituted silanes

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Beijing, China

Weisong Cui