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公开(公告)号：US11130115B2
公开(公告)日：2021-09-28
申请号：US16919097
申请日：2020-07-01
发明人： Haoran Li , Yong Wang , Baishan Hu , Xiao Ma , Dan Qiu , Qian Luo , Zhe Wang , Shanjun Mao , Lili Yu , Qichuan Li
摘要： The present invention discloses a selective hydrogenation catalyst and a preparation method and an application thereof, belonging to the technical field of catalysts. The selective hydrogenation catalyst comprises an active component and a carrier for supporting the active component, wherein the active component is a transition metal particle, the carrier is modified by a flexible chain ligand in advance, one end of the flexible chain ligand is uniformly distributed on the surface of the carrier, and the other end of the flexible chain ligand is coordinated on a transition metal. When the catalyst is used for catalytic hydrogenation reaction of dehydrolinalool or 2-methyl-3-butyn-2-ol, the stability is good, the catalyst still has high selectivity after being used for a long time, and the quality of a hydrogenation product can be guaranteed.
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2.发明授权公开(公告)号：US10668460B2
公开(公告)日：2020-06-02
申请号：US16669524
申请日：2019-10-31
申请人： ZHEJIANG NHU COMPANY LTD. , ZHEJIANG UNIVERSITY , SHANDONG NHU PHARMACEUTICAL CO., LTD. , SHANDONG NHU VITAMIN CO., LTD.
发明人： Yong Wang , Lili Yu , Xiao Ma , Jianyong Mao , Zhe Wang , Shanjun Mao , Jingsi Tang , Haoran Li , Zhirong Chen
IPC分类号： B01J37/02 , B01J37/04 , B01J35/10 , C07D495/04 , C07C5/05 , B01J37/16 , B01J23/42 , B01J23/44 , B01J23/46 , B01J37/08 , B01J21/18
摘要： A composite catalyst includes a carrier and noble metal particles supported by the carrier, wherein the carrier is a nitrogen-doped porous carbon composite material having a plurality of passages. The nitrogen-doped porous carbon composite material can include a nitrogen-doped porous carbon material and a plurality of metal oxide particles. The plurality of metal oxide particles can be uniformly distributed in the nitrogen-doped porous carbon material. The plurality of metal oxide particles can be partially exposed through the plurality of passages. The noble metal particles can be tightly combined with the exposed metal oxide particles to achieve recombination. And the noble metal particles can be at least one of Pd metal particles, Pt metal particles, Ru metal particles, Rh metal particles, Ir metal particles, Au metal particles, or a combination thereof.
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公开(公告)号：US10065901B2
公开(公告)日：2018-09-04
申请号：US15565133
申请日：2016-11-29
发明人： Yougui Zhou , Ming Yu , Jintao Yuan , Lei Zhao , Xiandong Zhu , Guangxiong Yu , Weiwei Su , Weikang Shao , Xingxing Shi , Yin Zhang , Ming Feng , Zhirong Chen , Haoran Li , Yuhong Zhang
IPC分类号： C07C45/62 , C07B53/00 , B01J31/02 , B01J23/46 , C07D333/22 , C07C47/225 , C07C47/232 , C07C49/21 , C07C49/217 , C07D307/46 , C07C47/21
摘要： The present invention discloses a method for preparing optically active carbonyl compound, comprising the following steps: under the catalysis of chiral amine salt and transition metal catalysts, with hydrogen and catalytic amount of dihydropyridine compound as hydrogen source, use α, β-unsaturated aldehydes or α, β-unsaturated troponoid compounds to conduct asymmetric catalytic reaction to obtain the optically active carbonyl compound. This method comes in moderate reaction condition, simple operation, and catalytic amount of dihydropyridine compounds usage, the target product is easy to be separated and purified from the reaction system, and the metal catalyst can be recycled, it is economical.
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公开(公告)号：US10974225B1
公开(公告)日：2021-04-13
申请号：US16919092
申请日：2020-07-01
发明人： Haoran Li , Xiao Ma , Yong Wang , Baishan Hu , Dan Qiu , Jianyong Mao , Bing Lu , Shanjun Mao , Lili Yu , Qichuan Li
IPC分类号： B01J23/00 , B01J23/889 , C07C29/56 , B01J23/881 , B01J37/02 , B01J37/08 , B01J35/04 , B01J21/06
摘要： The present disclosure belongs to the technical field of catalysis, and particularly relates to a metal oxide coated ceramic corrugated plate catalyst, its preparation method and application thereof in preparation of key intermediates of citral. The catalyst consists of a ceramic corrugated plate carrier and a metal oxide active layer coated on a surface of the carrier, wherein the metal oxide active layer is a metal oxide formed by active ingredient titanium and at least four other metal elements selected from vanadium, chromium, manganese, iron, zirconium, niobium and molybdenum.
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5.发明授权公开(公告)号：US10737250B2
公开(公告)日：2020-08-11
申请号：US16558125
申请日：2019-09-01
申请人： ZHEJIANG NHU COMPANY LTD. , ZHEJIANG UNIVERSITY , SHANDONG NHU PHARMACEUTICAL CO., LTD. , SHANDONG NHU VITAMIN CO., LTD.
发明人： Yong Wang , Lili Yu , Xiao Ma , Jianyong Mao , Zhe Wang , Shanjun Mao , Jianqing Li , Gang Chen , Haoran Li , Zhirong Chen
IPC分类号： B01J27/24 , C07C29/17 , B01J35/00 , B01J37/18 , B01J37/08 , B01J37/00 , B01J37/03 , B01J23/62 , B01J35/10
摘要： The present disclosure provides a PdIn alloy catalyst including a carrier and Pd metal particles supported by the carrier, the carrier is a nitrogen-doped porous carbon composite material having a plurality of passages, Pd metal particles are distributed in the plurality of passages, the nitrogen-doped porous carbon composite material includes a nitrogen-doped porous carbon material, a plurality of indium oxide particles, and In metal particles. The In metal particles are exposed through the plurality of passages, the plurality of indium oxide particles are uniformly distributed in the nitrogen-doped porous carbon material, and In atoms of the In metal particles migrated to surfaces of Pd particles selectively occupy edge and corner positions of metal lattice of Pd metal particles. The present disclosure further provides a method for manufacturing the PdIn alloy catalyst and application thereof.
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公开(公告)号：US09567440B2
公开(公告)日：2017-02-14
申请号：US14655326
申请日：2013-10-29
申请人： ZHEJIANG NHU SPECIAL MATERIALS CO., LTD. , ZHEJIANG UNIVERSITY , SHANGYU NHU BIOLOGICAL CHEMICAL CO., LTD. , ZHEJIANG NHU COMPANY LTD.
发明人： Zhirong Chen , Woyuan Li , Haoran Li , Ming Lian , Hong Yin , Guiyang Zhou , Xinfeng Zheng
摘要： The present invention discloses a fiber-grade polyphenylene sulfide resin synthesis method, taking sodium bisulfide and p-dichlorobenzene as raw materials, N-methyl pyrrolidone as the solvent and C5-C6 fatty acid salt formed through dehydration to C5-C6 fatty acid and sodium hydroxide as the polymerization additive for synthesis through polymerization. White polyphenylene sulfide resin is obtained through acidification and washing of reaction slurry. In view of the fact that MFR is below 125 g/10 min, weight-average molecular weight as measured by GPC is over 4.2×104, and whiteness is over 90, it can satisfy requirements for fiber polyphenylene sulfide resin. C5-C6 fatty acid salt according to the method of the present invention has a higher solubility in NMP, which can better promote polymerization. It is to be fully diverted into the filtrate after filter prior to conversion into free fatty acid again through acidification with hydrochloric acid. C5-C6 fatty acid is available for azeotropy with water, which has a limited solubility in water. Therefore, it is applicable to recycle C5-C6 fatty acid from the filtrate through azeotropy with water, and thereby solve the problem with separation of additive and sodium chloride that are soluble in water.
摘要翻译： 本发明公开了以二硫化二钠和对二氯苯为原料的纤维级聚苯硫醚树脂的合成方法，将N-甲基吡咯烷酮作为溶剂和通过脱水形成C5-C6脂肪酸和 氢氧化物作为通过聚合合成的聚合添加剂。 白色聚苯硫醚树脂通过反应浆液的酸化和洗涤得到。 鉴于MFR低于125g / 10min，通过GPC测得的重均分子量超过4.2×104，白度超过90，可以满足纤维聚苯硫醚树脂的要求。 根据本发明方法的C5-C6脂肪酸盐在NMP中的溶解度较高，可以更好地促进聚合。 过滤后将其全部转入滤液，然后再用盐酸酸化再转化成游离脂肪酸。 C5-C6脂肪酸可与水共沸，其在水中的溶解度有限。 因此，适用于通过与水共沸从滤液中回收C5-C6脂肪酸，从而解决了可溶于水的添加剂和氯化钠的分离问题。
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公开(公告)号：US11220478B2
公开(公告)日：2022-01-11
申请号：US16955511
申请日：2018-07-12
发明人： Zhirong Chen , Woyuan Li , Hong Yin , Guíyang Zhou , Haoran Li , Shuaifeng Pan , Ming Lian , Guangde Qin , Qichuan Li
IPC分类号： C07C319/20 , C01D5/02
摘要： The present disclosure discloses a preparation method for 4-phenylthio-benzenethiol. The preparation method comprises the following steps: subjecting phenyl sulfide as a raw material to a halogenation reaction to obtain 4-halophenyl sulfide; subjecting the 4-halophenyl sulfide to a sulfhydrylation reaction to obtain a 4-phenylthio-phenylthiolate; and subjecting the 4-phenylthio-phenylthiolate to acidification. The preparation method of the present disclosure avoids the use of materials such as thiophenol which pollutes the environment, and realizes efficient recycling of the reaction materials, solvents, water and the like. The preparation method of the present disclosure is a green process for the synthesis of 4-phenylthio-phenylthiol without organic waste, waste acid and waste water discharge.
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公开(公告)号：US11180440B2
公开(公告)日：2021-11-23
申请号：US16954774
申请日：2018-11-30
申请人： Zhejiang Nhu Company Ltd. , Zhejiang University , Shandong Nhu Amino Acid Co., Ltd. , Shandong Nhu Fine Chemical Science and Technology Company Ltd.
发明人： Zhirong Chen , Jianyong Mao , Baishan Hu , Guanbing Li , Haoran Li , Yu Wang , Yingkuo Yang , Qing Liu , Jiyu Tang , Weiyong Chen
IPC分类号： C07C209/52 , B01J23/78 , B01J35/04 , C07C209/48
摘要： The present disclosure relates to a method for preparing isophorone diamine by means of a hydrogenation reduction of isophorone nitrile imine. The hydrogenation reduction is continuously carried out in a multi-stage bubble column reactor loaded with a supported alkaline cobalt-based catalyst, wherein isophorone nitrile imine is successively in countercurrent contact with hydrogen in each stage of the reactor to carry out a hydrogenation reduction reaction, so as to obtain the isophorone diamine. The preparation method solves the problem of back-mixing, and further improves the conversion rate and the cis/trans ratio of the product.
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公开(公告)号：US10829510B2
公开(公告)日：2020-11-10
申请号：US16300426
申请日：2017-05-18
发明人： Fuxiang Deng , Yu Ding , Wei Xue , Sheng Yu , Wenwu Yan , Ming Yu , Yougui Zhou , Haoran Li
摘要： The present invention discloses a method for preparing sucralose-6-acetate in a biphasic liquid-liquid system. The method comprises slowly dropwise adding an inert non-polar solvent containing a chlorinating agent to an N,N-dimethyl formamide (DMF) solution of sucrose-6-acetate; then reacting the biphasic liquid-liquid mixture at a certain temperature for 9-20 hours; cooling the system to room temperature after stopping heating, and settling the solution to form layers, an upper layer being an inert non-polar solvent layer, and a lower layer being a DMF solution layer containing the product; hydrolyzing, neutralizing, and filtering the lower layer to obtain a filtrate, and then concentrating the filtrate to obtain a concentrate; dissolving the concentrate in water, and obtaining the product by extraction using ethyl acetate and crystallization, the inert non-polar solvent being an alkane solvent containing 8-18 carbon atoms that is not mutually soluble with DMF. The method has a high product yield, and can significantly reduce the decomposition of DMF, thereby reducing costs.
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