公开(公告)号：US20140284206A1

公开(公告)日：2014-09-25

申请号：US14354911

申请日：2011-12-29

Applicant: DALIAN UNIVERSITY OF TECHNOLOGY

Inventor： Hongchen Guo ,  Jing Zhang ,  Qichao Yuan

IPC: B01J19/08

CPC classification number: B01J19/088 ,  B01J2219/0809 ,  B01J2219/0828 ,  B01J2219/083 ,  B01J2219/0835 ,  C07C29/152 ,  C07C31/202 ,  Y02P20/52

Abstract: The invention belongs to the field of plasma chemistry technology, and it involves a method of methanol conversion. Some electric discharge methods, such as dielectric barrier discharge (DBD), corona discharge, pulse corona discharge, glow discharge, etc. were used to selectively excite methanol molecule. The reactant residence time, temperature, pressure and carrier gas/methanol mole proportion were regulated to convert methanol to the objective products. The present invention mainly used methanol as raw material to synthesis ethylene glycol (EG). This method is a one-step synthesis technology, non-catalyst, environmental pollution-free and high selectivity to the EG. Moreover, methanol was a sustainable resource which can be obtained by many approaches. In this invention, ethanol, n-propanol were also obtained together with EG by the optimizing of reaction conditions, so this technology has great industrial prospects.

Abstract translation: 本发明属于等离子体化学技术领域，涉及甲醇转化方法。 使用介电阻挡放电（DBD），电晕放电，脉冲电晕放电，辉光放电等一些放电方法选择性地激发甲醇分子。 调节反应物停留时间，温度，压力和载气/甲醇摩尔比例，将甲醇转化为目标产物。 本发明主要以甲醇为原料合成乙二醇（EG）。 该方法是一步法合成技术，无催化剂，环保无污染，高选择性。 此外，甲醇是可以通过许多方法获得的可持续资源。 在本发明中，通过优化反应条件，与EG一起获得乙醇，正丙醇，因此该技术具有很大的工业前景。

公开(公告)号：US11980874B2

公开(公告)日：2024-05-14

申请号：US17296204

申请日：2020-04-14

Applicant: DALIAN UNIVERSITY OF TECHNOLOGY ,  DALIAN QIYUAN TECHNOLOGY CO., LTD.

Inventor： Hongchen Guo ,  Cuilan Miao ,  Quanren Zhu

IPC: B01J29/89 ,  B01J29/035 ,  B01J35/00 ,  B01J37/00 ,  B01J37/04 ,  B01J37/06 ,  B01J37/08 ,  B01J37/10

CPC classification number: B01J29/89 ,  B01J29/035 ,  B01J35/00 ,  B01J37/009 ,  B01J37/04 ,  B01J37/06 ,  B01J37/082 ,  B01J37/10 ,  B01J2229/18 ,  B01J2229/30

Abstract: An alkali metal ion modified titanium silicalite zeolite TS-1 for gas phase epoxidation of propylene and hydrogen peroxide and a preparation method thereof. The method includes: 1: preparing an alkali metal hydroxide modification solution containing a small amount of TPA+ ions; 2: conducting a controlled hydrothermal treatment on a TS-1 zeolite matrix by using the alkali metal hydroxide solution containing a small amount of TPA+ ions; and 3: conducting post-treatment on the hydrothermally modified TS-1 zeolite. In the washing process, the modified TS-1 zeolite wet material is washed with a low concentration alkali metal hydroxide solution; and alkali metal ions are reserved on the silicon hydroxyl of the modified titanium silicalite zeolite. The prepared alkali metal ion modified titanium silicalite zeolite has significantly improved catalytic performance in the gas phase epoxidation of propylene and hydrogen peroxide.

公开(公告)号：US11944959B2

公开(公告)日：2024-04-02

申请号：US17296182

申请日：2020-04-14

Applicant: DALIAN UNIVERSITY OF TECHNOLOGY ,  DALIAN QIYUAN TECHNOLOGY CO., LTD.

Inventor： Hongchen Guo ,  Cuilan Miao ,  Quanren Zhu ,  Ning He ,  Yanhui Yi ,  Jiaxu Liu

IPC: B01J29/89 ,  B01J37/00 ,  B01J37/04 ,  B01J37/06 ,  B01J37/08 ,  B01J37/10

CPC classification number: B01J29/89 ,  B01J37/009 ,  B01J37/04 ,  B01J37/06 ,  B01J37/082 ,  B01J37/10 ,  B01J2229/18

Abstract: An alkali metal ion modified titanium silicalite zeolite for gas phase epoxidation of propylene and hydrogen peroxide and a preparation method thereof. The method includes, at first step: preparing an alkali metal hydroxide modification solution; at second step: conducting controlled hydrothermal treatment on a TS-1 zeolite matrix by using an alkali metal hydroxide solution; and at third step: conducting post-treatment on the hydrothermally modified TS-1 zeolite, including solid-liquid separation, washing, drying and calcining. In the washing process, the modified TS-1 zeolite wet material is washed with a low concentration alkali metal hydroxide solution; alkali metal ions are reserved on the silicon hydroxyl of the modified titanium silicalite zeolite; and an infrared characteristic absorption band of a framework titanium active center modified by the alkali metal ions is in a range above 960 cm−1 and below 980 cm−1.

公开(公告)号：US12054467B2

公开(公告)日：2024-08-06

申请号：US17296210

申请日：2020-04-14

Applicant: DALIAN UNIVERSITY OF TECHNOLOGY ,  DALIAN QIYUAN TECHNOLOGY CO., LTD.

Inventor： Hongchen Guo ,  Quanren Zhu ,  Cuilan Miao

IPC: C07D301/12 ,  B01J8/18 ,  B01J29/89 ,  B01J35/40 ,  B01J37/00 ,  B01J37/04 ,  B01J37/06 ,  B01J37/08 ,  B01J37/10

CPC classification number: C07D301/12 ,  B01J8/18 ,  B01J29/89 ,  B01J35/40 ,  B01J37/0009 ,  B01J37/009 ,  B01J37/04 ,  B01J37/06 ,  B01J37/082 ,  B01J37/10 ,  B01J2229/18

Abstract: A fluidized reaction method for synthesizing propylene oxide by gas phase epoxidation of propylene and hydrogen peroxide relates to a microspherical alkali metal ion modified titanium silicalite zeolite TS-1 catalyst applicable to the reaction method, and a preparation method thereof. A gas-solid phase fluidized epoxidation method refers to a gas phase epoxidation method in which the raw materials of propylene and hydrogen peroxide are directly mixed in the gas phase under normal pressure and temperature above 100° C. and the feed gas enables the titanium silicalite zeolite TS-1 catalyst to be fluidized in an epoxidation reactor. A catalyst applicable to the reaction method is a microspherical alkali metal ion modified titanium silicalite zeolite TS-1 catalyst which has the main characteristic that alkali metal cations are reserved on the titanium silicalite zeolite.

公开(公告)号：US20140301942A1

公开(公告)日：2014-10-09

申请号：US14355157

申请日：2012-03-18

Applicant: Dalian University of Technology

Inventor： Hongchen Guo ,  Ji Su ,  Guanghong Liu

IPC: B01J29/04

CPC classification number: B01J29/041 ,  B01J29/035 ,  B01J29/89 ,  B01J2229/183 ,  B01J2229/34 ,  B01J2229/38 ,  C01B37/005 ,  C01B39/085 ,  C07D301/03 ,  C07D303/04

Abstract: This invention belongs to the technical field of inorganic chemical synthesis, relating to a modification method for titanium-silicalite zeolite (TS-1). The feature of the invention is pretreating the TS-1, after that the TS-1 is modified by the mixture of quaternary ammonium salts and inorganic base. The quaternary ammonium salts mentioned above include tetrapropylammonium fluoride, tetrapropylammonium chloride, tetrapropylammonium iodide and their mixture. The inorganic base include that LiOH, NaOH and KOH and their mixture. TS-1 after the modification is aftertreated at last. The benefit of the invention is universal capable to modify the TS-1 synthesized by any method, specially the TS-1 with low cost method, the modification can enhance the catalytic performance on both gas and liquid phase epoxidation of propylene.

Abstract translation: 本发明属于无机化学合成技术领域，涉及钛硅沸石（TS-1）的改性方法。 本发明的特征是预处理TS-1，之后TS-1被季铵盐和无机碱的混合物改性。 上述季铵盐包括四丙基氟化铵，四丙基氯化铵，四丙基碘化铵及其混合物。 无机碱包括LiOH，NaOH和KOH及其混合物。 修改后的TS-1最终被后处理。 本发明的优点是能够通过任何方法，特别是TS-1以低成本的方法改性TS-1，这种改性可以提高丙烯气相和环氧化的催化性能。