公开(公告)号：US09308521B2

公开(公告)日：2016-04-12

申请号：US14157022

申请日：2014-01-16

Applicant: PQ CORPORATION

Inventor： David Allen Cooper ,  Cornelius Ouwehand ,  Laszlo Domokos ,  Lay Hwa Ong

IPC: C01B39/02 ,  B01J20/18 ,  B01J20/30 ,  C01B39/24 ,  C07C7/13

CPC classification number: B01J20/3078 ,  B01J20/186 ,  B01J2229/36 ,  C01B39/026 ,  C01B39/24 ,  C07C7/13

Abstract: Process for preparing a modified zeolite Y which process comprises subjecting zeolite Y having a silica to alumina molar ratio of at least 10 to calcination at a temperature of from 700 to 1000° C. wherein (i) the steam partial pressure is at most 0.06 bar at a temperature of from 700 to 800° C., (ii) the steam partial pressure is at most 0.08 bar at a temperature of from 800 to 850° C., (iii) the steam partial pressure is at least 0.03 bar at a temperature of from 850 to 900° C., and (iv) the steam partial pressure is at least 0.05 bar at a temperature of from 900 to 950° C. and (v) the steam partial pressure is at least 0.07 bar at a temperature of from 950 to 1000° C., a modified zeolite Y obtainable by such process, zeolite Y having a silica to alumina molar ratio of at least 10, the infrared spectrum of which has a peak at 3700 cm−1 but substantially no peaks at 3605 and 3670 cm−1 and zeolite Y having a silica to alumina molar ratio of at least 10, which zeolite Y has an acidity as measured by exchange with perdeuterated benzene of at most 20 micromole/gram.

Abstract translation: 制备改性沸石Y的方法，该方法包括在700至1000℃的温度下对二氧化硅与氧化铝的摩尔比至少为10的沸石Y进行煅烧，其中（i）蒸汽分压至多为0.06巴 在700至800℃的温度下，（ii）在800至850℃的温度下蒸汽分压为至多0.08巴，（iii）蒸汽分压至少为0.03巴， 温度为850〜900℃，（iv）在900〜950℃的温度下蒸汽分压为0.05巴以上，（v）蒸汽分压至少为0.07巴 沸石Y的熔点为950-1000℃，可通过这种方法获得的改性沸石Y，其二氧化硅与氧化铝摩尔比至少为10的沸石Y，其红外光谱在3700cm -1处具有峰值，但在 3605和3670cm-1以及二氧化硅与氧化铝摩尔比至少为10的沸石Y，该沸石Y具有一个 酸度通过与氘代苯交换最多20微摩尔/克测量。

公开(公告)号：US20140187411A1

公开(公告)日：2014-07-03

申请号：US14132801

申请日：2013-12-18

Applicant: PQ Corporation

Inventor： David Allen Cooper ,  Lay Hwa Ong ,  Ferry Winter ,  Laszlo Domokos ,  Wiebe Sjoerd Kijlstra ,  Sjoerd Alkema

IPC: B01J21/12

CPC classification number: B01J21/12 ,  B01J35/1019 ,  B01J35/1042 ,  B01J35/1047 ,  B01J37/0045 ,  B01J37/06 ,  C01B33/18 ,  C01F7/14 ,  C01F7/34 ,  C01P2002/50 ,  C01P2004/82 ,  C01P2006/12 ,  C01P2006/14

Abstract: A process for preparing a silica-alumina composition containing of from 30 to 70% wt silica and of from 70 to 30% wt of alumina, which process comprises (a) preparing an aqueous mixture containing aluminum sulfate and having a pH in the range of from 1.0 to 6.5; (b) adding alkali metal aluminate to the mixture obtained in step (a) to increase the pH of the mixture to within the range of from 7.1 to 12; (c) adding aluminum sulfate to the mixture obtained in step (b) to lower the pH of the mixture to within the range of from 1.5 to 6.5; (d) adding alkali metal silicate to the mixture obtained in step (c) to increase the pH of the mixture to within the range of from 6.5 to 11, (e) adding aluminum sulfate to the mixture obtained in step (d) to lower the pH of the mixture to within the range of from 1.5 to 6.5; wherein the final steps of the preparation process are (w) adding alkali metal silicate to a silica-alumina mixture obtained by step (a)-(e) to increase the pH of the mixture to within the range of from 5.0 to 8.5, (x) adding to the mixture obtained in step (w) (i) alkali metal aluminate to change the pH of the mixture to of from 7.8 to 12 and (ii) aluminum sulfate to change the pH of the mixture to within the range of from 1.5 to 7.7, wherein step (i) can precede or succeed step (ii), (y) treating the mixture obtained in step (x) with an alkaline solution having a pH of from 7.5 to 12, and (z) recovering a precipitate solid from the mixture obtained in step (y) to obtain a silica-alumina composition containing of from 30 to 70% wt silica and of from 70 to 30% wt of alumina.

Abstract translation: 一种制备含有30至70重量％二氧化硅和70至30重量％氧化铝的二氧化硅 - 氧化铝组合物的方法，该方法包括（a）制备含有硫酸铝的水性混合物，其pH值范围为 从1.0到6.5; （b）向步骤（a）中获得的混合物中加入碱金属铝酸盐以使混合物的pH值在7.1至12的范围内; （c）向步骤（b）中获得的混合物中加入硫酸铝以将混合物的pH降至1.5至6.5的范围; （d）向步骤（c）中获得的混合物中加入碱金属硅酸盐以将混合物的pH值提高到6.5至11的范围内，（e）向步骤（d）中获得的混合物中加入硫酸铝以降低 该混合物的pH在1.5至6.5的范围内; 其中制备方法的最后步骤是（w）将碱金属硅酸盐添加到通过步骤（a） - （e）获得的二氧化硅 - 氧化铝混合物中，以将混合物的pH提高到5.0-8.5的范围内 x）加入步骤（w）中获得的混合物（ⅰ）碱金属铝酸盐，将混合物的pH值改为7.8至12，和（ⅱ）硫酸铝将混合物的pH值改变到 1.5至7.7，其中步骤（i）可以在步骤（ii）之前或之后，（y）用pH为7.5至12的碱性溶液处理步骤（x）中获得的混合物，和（z）回收沉淀 从步骤（y）中获得的混合物中得到固体，得到含有30至70重量％二氧化硅和70至30重量％氧化铝的二氧化硅 - 氧化铝组合物。

公开(公告)号：US20140135560A1

公开(公告)日：2014-05-15

申请号：US14157022

申请日：2014-01-16

Applicant: PQ CORPORATION

Inventor： David Allen Cooper ,  Cornelius Ouwehand ,  Laszlo Domokos ,  Lay Hwa Ong

IPC: B01J20/30 ,  C07C7/13 ,  B01J20/18

CPC classification number: B01J20/3078 ,  B01J20/186 ,  B01J2229/36 ,  C01B39/026 ,  C01B39/24 ,  C07C7/13

Abstract: Process for preparing a modified zeolite Y which process comprises subjecting zeolite Y having a silica to alumina molar ratio of at least 10 to calcination at a temperature of from 700 to 1000° C. wherein (i) the steam partial pressure is at most 0.06 bar at a temperature of from 700 to 800° C., (ii) the steam partial pressure is at most 0.08 bar at a temperature of from 800 to 850° C., (iii) the steam partial pressure is at least 0.03 bar at a temperature of from 850 to 900° C., and (iv) the steam partial pressure is at least 0.05 bar at a temperature of from 900 to 950° C. and (v) the steam partial pressure is at least 0.07 bar at a temperature of from 950 to 1000° C., a modified zeolite Y obtainable by such process, zeolite Y having a silica to alumina molar ratio of at least 10, the infrared spectrum of which has a peak at 3700 cm−1 but substantially no peaks at 3605 and 3670 cm−1 and zeolite Y having a silica to alumina molar ratio of at least 10, which zeolite Y has an acidity as measured by exchange with perdeuterated benzene of at most 20 micromole/gram.

Abstract translation: 制备改性沸石Y的方法，该方法包括在700至1000℃的温度下对二氧化硅与氧化铝的摩尔比至少为10的沸石Y进行煅烧，其中（i）蒸汽分压至多为0.06巴 在700至800℃的温度下，（ii）在800至850℃的温度下蒸汽分压为至多0.08巴，（iii）蒸汽分压至少为0.03巴， 温度为850〜900℃，（iv）在900〜950℃的温度下蒸汽分压为0.05巴以上，（v）蒸汽分压至少为0.07巴 沸石Y的熔点为950-1000℃，可通过这种方法获得的改性沸石Y，其二氧化硅与氧化铝摩尔比至少为10的沸石Y，其红外光谱在3700cm -1处具有峰值，但在 3605和3670cm-1以及二氧化硅与氧化铝摩尔比至少为10的沸石Y，该沸石Y具有一个 酸度通过与氘代苯交换最多20微摩尔/克测量。