公开(公告)号：US09550682B2

公开(公告)日：2017-01-24

申请号：US14367455

申请日：2012-12-19

Applicant: RHODIA OPERATIONS

Inventor： Malika Clouin ,  Sylvaine Neveu

IPC: C01B33/12 ,  C01B33/193

CPC classification number: C01B33/128 ,  C01B33/193

Abstract: A silica production method comprising reacting a silicate with at least one acid, in which the acid used in at least one of the steps of the production method is a concentrated acid, preferably selected from the group consisting of sulfuric acid having a concentration of at least 80% by weight, in particular at least 90% by weight, acetic acid having a concentration of at least 90% by weight, formic acid having a concentration of at least 90% by weight, nitric acid having a concentration of at least 60% by weight, phosphoric acid having a concentration of at least 75% by weight, and hydrochloric acid having a concentration of at least 30% by weight.

Abstract translation: 一种二氧化硅生产方法，包括使硅酸盐与至少一种酸反应，其中在制备方法的至少一个步骤中使用的酸是浓酸，优选选自浓度至少为的硫酸 80重量％，特别是至少90重量％，浓度为至少90重量％的乙酸，浓度为至少90重量％的甲酸，浓度为至少60重量％的硝酸， 的浓度为至少75重量％的磷酸和浓度为至少30重量％的盐酸。

公开(公告)号：US20150266742A1

公开(公告)日：2015-09-24

申请号：US14367455

申请日：2012-12-19

Applicant: RHODIA OPERATIONS

Inventor： Malika Clouin ,  Sylvaine Neveu

IPC: C01B33/12

CPC classification number: C01B33/128 ,  C01B33/193

Abstract: A silica production method comprising reacting a silicate with at least one acid, in which the acid used in at least one of the steps of the production method is a concentrated acid, preferably selected from the group consisting of sulfuric acid having a concentration of at least 80% by weight, in particular at least 90% by weight, acetic acid having a concentration of at least 90% by weight, formic acid having a concentration of at least 90% by weight, nitric acid having a concentration of at least 60% by weight, phosphoric acid having a concentration of at least 75% by weight, and hydrochloric acid having a concentration of at least 30% by weight.

Abstract translation: 一种二氧化硅生产方法，包括使硅酸盐与至少一种酸反应，其中在制备方法的至少一个步骤中使用的酸是浓酸，优选选自浓度至少为的硫酸 80重量％，特别是至少90重量％，浓度为至少90重量％的乙酸，浓度为至少90重量％的甲酸，浓度为至少60重量％的硝酸， 的浓度为至少75重量％的磷酸和浓度为至少30重量％的盐酸。

公开(公告)号：US09725325B2

公开(公告)日：2017-08-08

申请号：US14367425

申请日：2012-12-19

Applicant: RHODIA OPERATIONS

Inventor： Malika Clouin ,  Sylvaine Neveu ,  Joël Racinoux

IPC: C01B33/12 ,  C01B33/193

CPC classification number: C01B33/128 ,  C01B33/193 ,  C01P2004/50

Abstract: A process for preparing precipitated silica comprising a precipitation reaction between silicate and an acid, in which the acid used in at least one of the steps is a concentrated acid, preferably selected from the group consisting of sulfuric acid having a concentration of at least 80% by weight, in particular at least 90% by weight, acetic acid having a concentration of at least 90% by weight, formic acid having a concentration of at least 90% by weight, nitric acid having a concentration of at least 60% by weight, phosphoric acid having a concentration of at least 75% by weight, and hydrochloric acid having a concentration of at least 30% by weight.

公开(公告)号：US20150210555A1

公开(公告)日：2015-07-30

申请号：US14367425

申请日：2012-12-19

Applicant: RHODIA OPERATIONS

Inventor： Malika Clouin ,  Sylvaine Neveu ,  Joël Racinoux

IPC: C01B33/12

CPC classification number: C01B33/128 ,  C01B33/193 ,  C01P2004/50

Abstract: A process for preparing precipitated silica comprising a precipitation reaction between silicate and an acid, in which the acid used in at least one of the steps is a concentrated acid, preferably selected from the group consisting of sulfuric acid having a concentration of at least 80% by weight, in particular at least 90% by weight, acetic acid having a concentration of at least 90% by weight, formic acid having a concentration of at least 90% by weight, nitric acid having a concentration of at least 60% by weight, phosphoric acid having a concentration of at least 75% by weight, and hydrochloric acid having a concentration of at least 30% by weight.

Abstract translation: 一种制备沉淀二氧化硅的方法，包括硅酸盐和酸之间的沉淀反应，其中在至少一个步骤中使用的酸是浓酸，优选选自浓度为至少80％的硫酸， ，特别是至少90重量％，浓度为至少90重量％的乙酸，浓度为至少90重量％的甲酸，浓度为至少60重量％的硝酸 ，浓度为至少75重量％的磷酸和浓度为至少30重量％的盐酸。