JP6229059B2 - メソポーラスゼオライトに基づくゼオライト材料 - Google Patents
メソポーラスゼオライトに基づくゼオライト材料 Download PDFInfo
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- JP6229059B2 JP6229059B2 JP2016532720A JP2016532720A JP6229059B2 JP 6229059 B2 JP6229059 B2 JP 6229059B2 JP 2016532720 A JP2016532720 A JP 2016532720A JP 2016532720 A JP2016532720 A JP 2016532720A JP 6229059 B2 JP6229059 B2 JP 6229059B2
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Description
・凝集塊の全量に対して、少なくとも70重量%、好ましくは少なくとも80重量%、より好ましくは少なくとも90重量%の全ゼオライト含有量、
・30%以上、好ましくは50%以上、より好ましくは70%以上、さらにより好ましくは80%以上、有利には90%以上のメソポーラスゼオライト含有量、
・950℃、1時間で行われた焼成後の、30%以下、好ましくは20%以下、有利には10%以下の無水百分率として表される結合剤含有量、
・7mm以下、好ましくは0.05mmと7mmとの間(両限界値を含む)、より好ましくは0.2mmと5mmとの間(両限界値を含む)、さらにより好ましくは0.2mmと2.5mmとの間(両限界値を含む)の平均体積径(D50)または長さ(その材料が球形ではない場合には、最大の寸法)、および
・平均体積径(D50)または長さ(その材料が球形ではない場合には、最大の寸法)が1mm未満である材料については、規格ASTM7084−04に従って測定したバルク破砕強度(BCS)が0.5MPaと3MPaとの間(両限界値を含む)、好ましくは0.75MPaと2.5MPaとの間(両限界値を含む)であるか、あるいは
・平均体積径(D50)または長さ(その材料が球形ではない場合には、最大の寸法)が1mm以上である材料については、規格ASTMD4179(2011)および規格ASTMD6175(2013)に従って測定した粒子破砕強度が0.5daNと30daNとの間(両限界値を含む)、好ましくは1daNと20daNとの間(両限界値を含む)である、
の特徴を有する。
a)数平均径が0.1μmと20μmとの間(両限界値を含む)、好ましくは0.1μmと20μmとの間(両限界値を含む)、好ましくは0.1μmと10μmとの間(両限界値を含む)、より好ましくは0.5μmと10μmとの間(両限界値を含む)、さらにより有利には0.5μmと5μmとの間(両限界値を含む)であり、Si/Al原子比が1と1.4との間(両限界値を含む)であり、後述するt−プロット法で定義されるメソ細孔外部比表面積が40m2.g−1と400m2.g−1との間(両限界値を含む)、好ましくは60m2.g−1と200m2.g−1との間(両限界値を含む)である、少なくとも1つのメソポーラスゼオライト結晶を、場合によってゼオライト化できる、少なくとも80%のクレイまたはクレイの混合物を含む結合剤、および最大5%の添加剤ならびに凝集塊材料を成形する水量とともに凝集する工程、
b)50℃と150℃の間の温度での凝集塊の乾燥工程、
c)150℃を超える温度で、典型的には180℃と800℃との間、好ましくは200℃と650℃との間の温度で、数時間、例えば2時間から6時間で、酸化気体および/または不活性気体、特に酸素、窒素、空気、乾燥空気および/または脱炭酸空気、場合によって乾燥および/脱炭酸された、酸素滅損空気などの気体をフラッシュさせながら工程b)の凝集塊を焼成する工程、
d)場合により、工程c)において得られた凝集塊をアルカリ塩基性溶液と接触させることによる結合剤のゼオライト化工程
e)場合により、少なくとも1つのアルカリ金属塩またはアルカリ土類金属塩の溶液と接触させることによる工程c)または工程d)の凝集塊のカチオン交換工程
f)次いで、工程b)で記載した条件下での、工程d)または工程e)において得られた凝集塊の洗浄および乾燥工程、および
g)工程c)で記載した条件下での、工程f)において得られた凝集塊の活性化による凝集塊ゼオライト材料の製造工程
を含む。
規格NF EN196−2(2006年4月)に記載されるように、950℃±25℃の温度における空気中でのサンプルの焼成による酸化性雰囲気で強熱減量を決定する。測定標準偏差は0.1%未満である。
略記XRDの当業者に公知であるX線散乱解析によって凝集塊のゼオライト相の純度を評価する。この特定はBruekerのXRD装置で行う。
・40kV−30mAで使用されるCuチューブ
・スリットサイズ(発散、拡散および分析)=0.6mm
・フィルター:Ni
・サンプル回転装置:15rpm
・測定範囲:3°<2θ<50°
・インクレメント:0.02°
・インクレメント当たりの計数時間:2秒
各々のゼオライト構造は回折ピークの位置およびその相対強度で定まる固有のディフラクトグラム(または回折スペクトル)を有するので、この解析によって、分析した固体に存在する結晶相を特定することが可能になる。
・40kV−30mAで使用されるCuチューブ
・スリットサイズ(発散、散乱および分析)=0.6mm
・フィルター:Ni
・サンプル回転装置:15rpm
・測定範囲:3°<2θ<50°
・インクレメント:0.02°
・インクレメント当たりの計数時間:2秒
ミクロ細孔容積の測定はDubinin−Raduskevitch容積の測定(77Kでの液体窒素の吸着または87Kでの液体アルゴンの吸着)などの標準法を介して推定する。
t−プロット計算法は、吸着等温線データQads=f(P/P0)を利用することでミクロ細孔比表面積を計算することが可能になる。全細孔比表面積(m2/g)を計算するBET比表面積(BET S=ミクロ細孔比表面積+メソ細孔外部比表面積)との差を決めることによって外部比表面積をそれから推測できる。
吸着剤を乳鉢で粉砕後、超音波処理で1分間、得られた粉末をエタノール中に分散する。一滴の溶液を顕微鏡格子上に置く。サンプルを周囲条件下で放置乾燥する。
工程a)で使用されるメソポーラスゼオライト結晶および凝集塊に含まれるゼオライト結晶の数平均径の推定は、走査型電子顕微鏡(SEM)での観察によって前に示したように行う。
本発明で記述されるゼオライト吸着剤の床の破砕強度は、Vinci Technologies社により販売されている「BCSテスター」装置と組み合せて、Shell法シリーズのSMS1471−74(Shell法シリーズSMS1471−74「触媒のバルク破砕強度の決定、圧縮―篩の方法」)に従い、特性評価される。この方法は、425μmの篩を使用して、3mmと6mmとの間のサイズの触媒を、元々特性評価することを意図しており、それによって特に破砕中に作られる微粉末を分離することが可能になる。425μmの篩の使用は、1.6mmを超える粒径を有する粒子には好適であるものの、特性評価するのに望まれる凝集塊の粒径に従って適応されなければならない。
規格ASTM D4179およびD6175に従って、Vinci Technologies社により販売されている粒子破砕強度装置を使用して機械的粒子破砕強度を決定する。
TPOAC/Al2O3比=0.04での、核形成ゲルおよび成長ゲルの添加によるX型のメソポーラスゼオライトの合成
加熱ジャケット、温度プローブおよび攪拌機を備えたステンレス製反応器中で、水酸化ナトリウム(NaOH)119g、アルミナ三水和物(65.2重量%のAl2O3を含む、Al2O3・3H2O)128gおよび水195.5gを含むアルミン酸塩水溶液を、25℃で25分間、300rpmの攪拌速度で、ケイ酸ナトリウム565.3g、NaOH55.3gおよび25℃の水1997.5gを含むケイ酸塩水溶液中において混合することによって成長ゲルを調製する。
成長ゲルと同じ仕様で調製し、40℃で1時間熟成した、組成が12Na2O/Al2O3/10SiO2/180H2Oである核形成ゲル61.2g(即ち、2重量%)を、300rpmで攪拌しながら25℃で成長ゲルに添加する。300rpmで5分間均一化後に攪拌速度を100rpmに減じて、30分間攪拌を続ける。
メタノール(MeOH)中60%のTPOAC溶液27.3gを、300rpmで攪拌しながら反応媒体に入れる(TPOAC/Al2O3比=0.04)。熟成工程を、結晶化が始まる前に25℃において1時間300rpmで行う。
攪拌速度を50rpmに下げ、反応媒体の温度が80分間に渡って75℃に上がるように、反応ジャケットの表示温度を80℃にセットする。75℃で22時間の安定な段階後、冷水をジャケットに循環させることによって反応媒体を冷却し、結晶化を停止する。
固体を焼結させて回収し、次いで脱イオン水で洗浄して中性pHにする。
生成物を特性評価するために、90℃で8時間、オーブンで乾燥を行い、乾燥生成物の強熱減量は23重量%である。
メソポーラスゼオライトX凝集塊の調製(本発明)
以下の文章において、所与の質量は無水等価物として表す。
非メソポーラスゼオライトX凝集塊の調製(比較例)
実施例2の操作を、メソポーラスゼオライトXを参照の非メソポーラスゼオライトX押し出し物と置き換えて同じ仕様で繰り返す。参照の非メソポーラスゼオライトX押し出し物の機械的粒子破砕強度は2.5daNである。それらの単位体積当たりの見掛け質量は0.66g/cm3である。
実施例2の凝集塊と先行技術の凝集塊に相当する実施例3の凝集塊との比較
特許出願WO2013/106816(PCT/US2013/021420)中の実施例4、表4の最終行に記述の非メソポーラスゼオライトXの後処理によって得られたメソポーラスゼオライトを比較検討のため使用する。
Claims (15)
- 少なくとも1つのメソポーラスゼオライトを含む凝集塊ゼオライト材料であって、前記凝集塊ゼオライト材料が少なくとも以下の特徴:
・凝集塊の全量に対して、少なくとも70重量%の全ゼオライト含有量;
・30%以上のメソポーラスゼオライト含有量;
・950℃、1時間で行われた焼成後の、30%以下の結合剤含有量;
・7mm以下の平均体積径(D50)または長さ(その材料が球形ではない場合には、最大の寸法);および
・平均体積径(D50)または長さ(その材料が球形ではない場合には、最大の寸法)が1mm未満である材料については、ASTM7084−04に従って測定したバルク破砕強度(BCS)が0.5MPaと3MPaとの間(両限界値を含む)であるか、あるいは
・平均体積径(D50)または長さ(その材料が球形ではない場合には、最大の寸法)が1mm以上である材料については、ASTMD4179(2011)およびASTMD6175(2013)に従って測定した粒子破砕強度が0.5daNと30daNとの間(両限界値を含む)である;
を有する、凝集塊ゼオライト材料。 - さらに、1つ以上の非メソポーラスゼオライトを含む、請求項1に記載の材料。
- 前記平均体積径(D50)または長さ(その材料が球形ではない場合には、最大の寸法)が、0.05mmと7mmとの間(両限界値を含む)である、請求項1に記載の材料。
- 0.4g.cm−3と1g.cm−3との間(両限界値を含む)の単位体積当たりの見掛け質量をさらに有する、請求項1から3のいずれか一項に記載の材料。
- 前記メソポーラスゼオライトが、Si/Al原子比が1と1.4との間(両限界値を含む)のLTA、EMTおよびFAU構造のメソポーラスゼオライトから選択される、請求項1から4のいずれか一項に記載の材料。
- ゼオライト結晶が、カオリン、カオリナイト、ナクライト、ディッカイト、ハロイサイト、アタパルジャイト、セピオライト、モンモリロナイト、ベントナイト、イライトおよびメタカオリンから選択されるクレイまたはクレイの混合物ならびにあらゆる比でのこれらの2種以上の混合物を含む結合剤で凝集している、請求項1から5のいずれか一項に記載の材料。
- 少なくとも以下の工程:
a)数平均径が0.1μmと20μmとの間(両限界値を含む)であり、Si/Al原子比が1と1.4との間(両限界値を含む)であり、t−プロット法で定義されるメソ細孔外部比表面積が40m2.g−1と400m2.g−1との間(両限界値を含む)である、少なくとも1つのメソポーラスゼオライト結晶を、少なくとも80%のクレイまたはクレイの混合物を含む結合剤、および最大5%の添加剤ならびに凝集塊材料を成形する水量とともに凝集する工程;
b)50℃と150℃の間の温度での凝集塊の乾燥工程;
c)150℃を超える温度で、数時間で、酸化気体および/または不活性気体をフラッシュさせながら工程b)の凝集塊を焼成する工程;
f)次いで、工程b)で記載した条件下での、工程d)または工程e)において得られた凝集塊の洗浄および乾燥工程;および
g)工程c)で記載した条件下での、工程f)において得られた凝集塊の活性化による凝集塊ゼオライト材料の製造工程、
を含む、請求項1から5のいずれか一項に記載の材料を製造するための方法。 - 工程a)において、犠牲型板の存在下で製造されたゼオライト結晶の凝集が行われる請求項7に記載の方法。
- 犠牲型板が、オルガノシラン型の化合物およびオリゴマーなどから選択される、請求項8に記載の方法。
- 前記犠牲型板の除去が、工程a)の凝集前に、または工程c)と同時に、ゼオライト結晶の焼成によって行われる、請求項9に記載の方法。
- 前記犠牲型板の除去が、工程a)の凝集前に、または工程c)と同時に、ゼオライト結晶の焼成によって行われる、請求項9に記載の方法。
- 工程c)のフラッシュは、酸素、窒素、乾燥空気、脱炭酸空気、乾燥酸素滅損空気および脱炭酸された酸素滅損空気の中から選択される1つまたはいくつかの気体を用いて行われる、請求項7に記載の方法。
- さらに、工程c)において得られた凝集塊をアルカリ塩基性溶液と接触させることによる結合剤のゼオライト化工程d)を含む、請求項7に記載の方法。
- さらに、少なくとも1つのアルカリ金属塩またはアルカリ土類金属塩の溶液と接触させることによる工程c)の凝集塊のカチオン交換工程を含む、請求項7に記載の方法。
- さらに、少なくとも1つのアルカリ金属塩またはアルカリ土類金属塩の溶液と接触させることによる工程d)の凝集塊のカチオン交換工程を含む、請求項13に記載の方法。
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| FR3032130B1 (fr) | 2015-02-02 | 2019-12-27 | Arkema France | Adsorbants zeolithiques de haute surface externe, leur procede de preparation et leurs utilisations |
| CN109694721B (zh) * | 2017-10-23 | 2021-01-08 | 中国石油化工股份有限公司 | 一种大孔高岭石及其制备和应用 |
| CN109985663B (zh) * | 2017-12-29 | 2020-09-08 | 华中科技大学 | 一种对一锅法原位合成的Cu-SSZ-13分子筛进行后处理的方法 |
| US11007511B2 (en) | 2018-05-08 | 2021-05-18 | Saudi Arabian Oil Company | Methods for the synthesis of tunable mesoporous zeolites |
| CN111017953B (zh) * | 2019-12-19 | 2023-04-18 | 天津市长芦化工新材料有限公司 | 氟化的硅铝分子筛及其制备方法和应用 |
| FR3112289B1 (fr) | 2020-07-10 | 2022-07-22 | Arkema France | Purification de liquides aromatiques |
| CN112194150A (zh) * | 2020-11-11 | 2021-01-08 | 贵州理工学院 | 一种粉煤灰基微孔及多级孔沸石分子筛的制备方法 |
| FR3117379A1 (fr) | 2020-12-15 | 2022-06-17 | IFP Energies Nouvelles | Procede de preparation d'un materiau microporeux zeolithique contenant plus de 95% de zeolithe x et ayant une bonne resistance mecanique |
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| AU2014304410B2 (en) | 2017-07-06 |
| PL3030520T3 (pl) | 2021-10-25 |
| EA030327B1 (ru) | 2018-07-31 |
| CN105121345A (zh) | 2015-12-02 |
| CA2918929C (fr) | 2018-06-05 |
| KR101800562B1 (ko) | 2017-11-22 |
| WO2015019014A2 (fr) | 2015-02-12 |
| KR20160040675A (ko) | 2016-04-14 |
| EP3030520B1 (fr) | 2021-06-09 |
| CA2918929A1 (fr) | 2015-02-12 |
| TWI634076B (zh) | 2018-09-01 |
| ES2879288T3 (es) | 2021-11-22 |
| FR3009299B1 (fr) | 2019-11-15 |
| JP2016527179A (ja) | 2016-09-08 |
| TW201522224A (zh) | 2015-06-16 |
| BR112016001893A2 (pt) | 2017-08-01 |
| EP3030520A2 (fr) | 2016-06-15 |
| FR3009299A1 (fr) | 2015-02-06 |
| EA201690356A1 (ru) | 2016-06-30 |
| US9987613B2 (en) | 2018-06-05 |
| WO2015019014A3 (fr) | 2015-04-09 |
| UA116155C2 (uk) | 2018-02-12 |
| BR112016001893A8 (pt) | 2017-12-26 |
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