公开(公告)号：US20110015419A1

公开(公告)日：2011-01-20

申请号：US12836224

申请日：2010-07-14

Applicant: Justin Pendleton ,  Sai Bhavaraju ,  Kean Duffey

Inventor： Justin Pendleton ,  Sai Bhavaraju ,  Kean Duffey

IPC: C11B3/02

CPC classification number: C11C3/003 ,  C10G2300/1011 ,  C10L1/026 ,  Y02E50/13 ,  Y02P30/20

Abstract: Systems and methods for using carbon dioxide to remove an alkali catalyst and to recover free carboxylic acids after a transesterification reaction are disclosed. Generally, the methods include first providing a mixture resulting from the transesterification of an ester, wherein the mixture includes substances selected from the alkali catalyst, an alcohol, and a transesterification reaction product such as biodiesel. Second, the methods generally include adding carbon dioxide to the mixture. In some cases, adding the carbon dioxide to the mixture causes the alkali catalyst to convert into an alkali carbonate and/or an alkali bicarbonate. In other cases, adding the carbon dioxide to the mixture causes the carboxylic acid alkali salt to convert into a free carboxylic acid. In either case, the alkali carbonate, the alkali bicarbonate, and/or the free carboxylic acid can be separated from the mixture in any suitable manner.

Abstract translation: 公开了在酯交换反应之后使用二氧化碳去除碱催化剂和回收游离羧酸的系统和方法。 通常，所述方法包括首先提供由酯的酯交换得到的混合物，其中所述混合物包括选自碱催化剂，醇和酯交换反应产物如生物柴油的物质。 第二，方法通常包括向混合物中加入二氧化碳。 在一些情况下，向混合物中加入二氧化碳使得碱催化剂转化为碱金属碳酸盐和/或碱式碳酸氢盐。 在其他情况下，向混合物中加入二氧化碳使得羧酸碱金属盐转化为游离羧酸。 在任一种情况下，碱金属碳酸盐，碱金属碳酸氢盐和/或游离羧酸可以以任何合适的方式与混合物分离。

公开(公告)号：US09057137B2

公开(公告)日：2015-06-16

申请号：US13103716

申请日：2011-05-09

Applicant: Sai Bhavaraju ,  Kean Duffey

Inventor： Sai Bhavaraju ,  Kean Duffey

IPC: C25B3/00 ,  C25B1/02 ,  B01D61/42

CPC classification number: C25B1/02 ,  B01D61/422 ,  C25B3/00

Abstract: A method for producing and recovering a carboxylic acid in an electrolysis cell. The electrolysis cell is a multi-compartment electrolysis cell. The multi-compartment electrolysis cell includes an anodic compartment, a cathodic compartment, and a solid alkali ion transporting membrane (such as a NaSICON membrane). An anolyte is added to the anodic compartment. The anolyte comprises an alkali salt of a carboxylic acid, a first solvent, and a second solvent. The alkali salt of the carboxylic acid is partitioned into the first solvent. The anolyte is then electrolyzed to produce a carboxylic acid, wherein the produced carboxylic acid is partitioned into the second solvent. The second solvent may then be separated from the first solvent and the produced carboxylic acid may be recovered from the second solvent. The first solvent may be water and the second solvent may be an organic solvent.

Abstract translation: 一种在电解槽中生产和回收羧酸的方法。 电解槽是多室电解池。 多室电解槽包括阳极室，阴极室和固体碱离子传输膜（例如NaSICON膜）。 将阳极电解液加入阳极室。 阳极电解液包含羧酸的碱金属盐，第一溶剂和第二溶剂。 将羧酸的碱金属盐分成第一溶剂。 然后电解阳极电解液以产生羧酸，其中所产生的羧酸被分配到第二溶剂中。 然后可以将第二溶剂与第一溶剂分离，并且可以从第二溶剂回收所产生的羧酸。 第一溶剂可以是水，第二溶剂可以是有机溶剂。

公开(公告)号：US08247585B2

公开(公告)日：2012-08-21

申请号：US12836224

申请日：2010-07-14

Applicant: Justin Pendleton ,  Sai Bhavaraju ,  Kean Duffey

Inventor： Justin Pendleton ,  Sai Bhavaraju ,  Kean Duffey

IPC: C11B7/00

CPC classification number: C11C3/003 ,  C10G2300/1011 ,  C10L1/026 ,  Y02E50/13 ,  Y02P30/20

Abstract: Systems and methods for using carbon dioxide to remove an alkali catalyst and to recover free carboxylic acids after a transesterification reaction are disclosed. Generally, the methods include first providing a mixture resulting from the transesterification of an ester, wherein the mixture includes substances selected from the alkali catalyst, an alcohol, and a transesterification reaction product such as biodiesel. Second, the methods generally include adding carbon dioxide to the mixture. In some cases, adding the carbon dioxide to the mixture causes the alkali catalyst to convert into an alkali carbonate and/or an alkali bicarbonate. In other cases, adding the carbon dioxide to the mixture causes the carboxylic acid alkali salt to convert into a free carboxylic acid. In either case, the alkali carbonate, the alkali bicarbonate, and/or the free carboxylic acid can be separated from the mixture in any suitable manner.

Abstract translation: 公开了在酯交换反应之后使用二氧化碳去除碱催化剂和回收游离羧酸的系统和方法。 通常，所述方法包括首先提供由酯的酯交换得到的混合物，其中所述混合物包括选自碱催化剂，醇和酯交换反应产物如生物柴油的物质。 第二，方法通常包括向混合物中加入二氧化碳。 在一些情况下，向混合物中加入二氧化碳使得碱催化剂转化为碱金属碳酸盐和/或碱式碳酸氢盐。 在其他情况下，向混合物中加入二氧化碳使得羧酸碱金属盐转化为游离羧酸。 在任一种情况下，碱金属碳酸盐，碱金属碳酸氢盐和/或游离羧酸可以以任何合适的方式与混合物分离。

公开(公告)号：US20120292200A1

公开(公告)日：2012-11-22

申请号：US13562424

申请日：2012-07-31

Applicant: Shekar Balagopal ,  Kean Duffey

Inventor： Shekar Balagopal ,  Kean Duffey

IPC: C25B1/00 ,  C25B9/08

CPC classification number: C25B1/00 ,  C01F7/02 ,  C01P2002/72 ,  C01P2004/03 ,  C01P2004/20 ,  C01P2004/61 ,  C25B13/04 ,  C25B15/08 ,  Y02P20/132

Abstract: Methods and apparatus for separating aqueous solution of alkali aluminate into alkali hydroxide and aluminate hydroxide are disclosed. These methods are enabled by the use of alkali ion conductive membranes in electrolytic cells that are chemically stable and alkali ion selective. The alkali ion conductive membrane includes a chemically stable ionic-selective cation membrane.

Abstract translation: 公开了将碱金属铝酸盐的水溶液分离成碱性氢氧化物和氢氧化铝酸盐的方法和装置。 这些方法是通过在化学稳定和碱离子选择性的电解池中使用碱离子传导膜来实现的。 碱离子导电膜包括化学稳定的离子选择性阳离子膜。