公开(公告)号：US09085505B2

公开(公告)日：2015-07-21

申请号：US14388086

申请日：2013-05-16

Applicant: DALIAN INSTITUTE OF CHEMICAL PHYSICS, CHINESE ACADEMY OF SCIENCES

Inventor： Tao Zhang ,  Jifeng Pang ,  Mingyuan Zheng ,  Yu Jiang ,  Aiqin Wang

IPC: C07C29/132

CPC classification number: C07C29/132 ,  C07C29/60 ,  Y02P20/52 ,  C07C31/202 ,  C07C31/205

Abstract: This invention provides a method for highly efficient catalytic conversion of cellulosic raw materials to glycols. In the process, cellulosic compounds such as crop stalk, wood powder and etc., as feedstock are subjected to one-step catalytic conversion with a ternary composite catalyst composed of organic acid or inorganic acid which does not contain tungsten, a transition metal from Groups 8, 9 or 10 such as iron, cobalt, nickel, ruthenium, rhodium, palladium, iridium, and platinum, or a mixture thereof, and a tungsten oxide, a tungsten sulfide, a tungsten chloride, a tungsten hydroxide, tungsten bronze, tungstic acid, a tungstate, a metatungstate acid, a metatungstate, a paratungstate acid, a paratungstate, a peroxotungstic acid, pertungstate and heteropoly tungstate, or a mixture thereof. The reaction is carried out under hydrothermal conditions at a temperature between 120-300° C. with hydrogen pressure between 1-13 MPa.

Abstract translation: 本发明提供了一种将纤维素原料高效催化转化成二醇的方法。 在此过程中，作为原料的纤维素化合物如作物秸秆，木粉等作为原料，用由不含钨的有机酸或无机酸组成的三元复合催化剂进行一步催化转化， 8,9或10，例如铁，钴，镍，钌，铑，钯，铱和铂，或其混合物，以及氧化钨，硫化钨，氯化钨，氢氧化钨，钨青铜，钨 酸，钨酸盐，偏钨酸，偏钨酸盐，仲钨酸，仲钨酸盐，过钨酸，过钨酸盐和杂多钨酸盐，或其混合物。 反应在水热条件下在120-300℃的温度下进行，氢气压力在1-13MPa之间。

公开(公告)号：US10654781B2

公开(公告)日：2020-05-19

申请号：US15735190

申请日：2015-11-26

Applicant: DALIAN INSTITUTE OF CHEMICAL PHYSICS, CHINESE ACADEMY OF SCIENCES

Inventor： Ruiyan Sun ,  Mingyuan Zheng ,  Tao Zhang ,  Jifeng Pang ,  Yu Jiang ,  Aiqin Wang ,  Xiaodong Wang

IPC: B01J23/89 ,  B01J35/00 ,  B01J37/02 ,  B01J23/62 ,  B01J33/00 ,  B01J25/02 ,  B01J37/18 ,  B01J23/835 ,  C07C29/132

Abstract: This invention provides a method for catalytic conversion of carbohydrates to low-carbon diols using alloy catalysts. In the process, carbohydrates as the feedstock are subjected to one-step catalytic conversion to realize the highly efficient and selective production of ethylene glycol etc. under hydrothermal conditions, with an alloy catalyst composed of tin, and a transition metal such as iron, cobalt, nickel, rhodium, ruthenium, palladium, iridium, platinum and copper, or a mixture thereof. The reaction is carried out in water at a temperature range of 120-300° C., with a hydrogen pressure range of 1-13 MPa. Compared with the present petroleum based synthesis technology of ethylene glycol, the method in this invention possesses advantages of using renewable feedstock, high atom economy and environmental friendly. Besides, compared with other technologies using biomass as feedstock to produce ethylene glycol, the alloy catalyst in this invention possesses the advantages of few leaching amount, good hydrothermal stability and easy to recycle.