JPH0230612A - 結晶性変性シリカ及びその製法 - Google Patents

結晶性変性シリカ及びその製法

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JPH0230612A
JPH0230612A JP1030078A JP3007889A JPH0230612A JP H0230612 A JPH0230612 A JP H0230612A JP 1030078 A JP1030078 A JP 1030078A JP 3007889 A JP3007889 A JP 3007889A JP H0230612 A JPH0230612 A JP H0230612A
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modified silica
silicon
crystalline modified
silica
boron
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JPH0223481B2 (ja
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Marco Taramasso
マルコ・タラマッソ
Giovanni Manara
ジョバンニ・マナーラ
Vittorio Fattore
ビットリオ・ファットーレ
Bruno Notari
ブルーノ・ノターリ
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Priority claimed from IT2263879A external-priority patent/IT1166822B/it
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Publication of JPH0230612A publication Critical patent/JPH0230612A/ja
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    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N3/00Scanning details of television systems; Combination thereof with generation of supply voltages
    • H04N3/10Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical
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    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C1/00Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon
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    • CCHEMISTRY; METALLURGY
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    • C07C2/864Preparation of hydrocarbons from hydrocarbons containing a smaller number of carbon atoms by condensation between a hydrocarbon and a non-hydrocarbon the non-hydrocarbon contains only oxygen as hetero-atoms the non-hydrocarbon is an alcohol
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N3/00Scanning details of television systems; Combination thereof with generation of supply voltages
    • H04N3/10Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical
    • H04N3/16Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical by deflecting electron beam in cathode-ray tube, e.g. scanning corrections
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Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。

Description

【発明の詳細な説明】 質に係る。さらに詳述すれば、本発明は、ケイ素及びホ
ウ素の酸化物でなりかつ多孔性の結晶構造を有する合成
物質、該合成物質の製法及び該合成物質の使用に関する
ものである。
各種文献によれば、ホウ素が平面配位又は四面体配位を
有しうる稠密な天然のホウケイ酸塩(非多孔性物質であ
る)が知られている。多孔性ガラスも公知であり、かか
るガラスはガラス様物質を化学的に作用せしめることに
より得られる。これらの物質はその原材料に応じて、シ
リカ、アルカリ、アルミナ及びB,0,を含みうる。文
献は、ホウ素の配位がゼオライト形構造、すなわち規則
正しい多孔性の結晶構造であることを教示しているが、
これまでのところ、かかる構造は得られていない(Br
eck,ゼオライト・モレキュラー・シーブス(Zeo
lite Molecular Sieves)J.W
iley and Sons社。
ニューヨーク, 1974,第322頁)。
公知の方法は、米国特許第4.049,573号に記載
の如く、アルミニウム及びケイ素の酸化物からなるゼオ
ライトにホウ酸を含浸せしめることのみである。この場
合、ホウ素は結晶格子の一部を構成するよう格子内に入
るものではない。
発明者らは、ケイ素に代わる置換体としてホウ素を結晶
格子に導入せしめることによって変性せしめた結晶性シ
リカを開発した。
さらに、発明者らは、ホウ素がケイ素に代わる置換用元
素となる以外にも、多孔質であり、よく制御されかつゼ
オライト構造に近似した結晶構造を有する新規物質を生
成し得るとの知見を得て本発明に至った。
該物質(本明細書の以下の記載では、簡略化のため「ボ
ラリット(Boralite)D Jと称する)は、酸
化物のモル比として、かつ無水状態として次式により特
徴ずけられる。
(0− 1)R20・(0−l)C2/謬・8203・
(4 − 20)SiO□(式中、Rはテトラブチルア
ンモニウムカチオン(TBA)であり、CはH 、 N
H.又は原子価nの金属の如きカチオンである。) なお、ボラリットDの熱安定性はモル比Stew/B,
O.が大きいことに関連する。
特に、か焼された後ではR,Oが存在しないことが望ま
しい(ただし、必ずしも厳密な意味ではない)。
上記式に相当するボラリットDは特定の結晶構造を有し
、高温度(450℃ないし750℃)でか焼したH+形
のものに関するX線回折スペクトルは第1表に記載の特
徴的なピークを示す。
第  1 表 面間隔 相対強度 d(入) 11.12    VS to、oo    s 6.67    W 6.36    W 5.97    M 5.56    MY 499    MY 4.59    W 4.34    W 3.83    S 面間隔 相対強度 d(入) 3.70 3.62 3.46 3.33 3.04 2.97 2.50 2.48 2.00 記号の説明:vS−非常に強い  S=強いM−中位 
 MV=多少多少 界−弱い モル比5iot/ B2O3、焼成温度及びカチオンの
性質の変化に伴って、上記数値は若干変化する。
11+の代わりに他のカチオンが存在する場合には、通
常のゼオライトのものと類似してスペクトルにわずかな
変化を生ずる。
赤外線吸収スペクトルでは、導入されたホウ素の量を関
数として910ないし925cm−’の領域に特徴的な
吸収を示す。
ボラリットDの製法は、水熱反応条件下、ケイ素誘導体
、ホウ素誘導体及び包接化剤(テトラブチルアンモニウ
ム化合物)を、I))19ないし14、温度110ない
し220℃、期間lないし30日間で反応させることを
特徴とする。
ホウ素及びケイ素の有機誘導体(たとえばホウ酸トリア
ルキル及びオルトケイ酸テトラアルキルエステル)を使
用し、テフロン(登録商標)容器、又はポリプロピレン
、白金、その他の材料の容器(アルカリ性溶液が結晶化
容器から不純物を抽出することを防止するため)におい
て、水熱反応を行なうことにより、高純度のボラリット
Dが得られる。
不純物が存在しないことは、ボラリットDの特有な性質
(たとえば疎水性であること、このため脱水力を持たな
いこと)を保証する。
非常に高い純度が要求されない場合には、各成分につい
て安価な原料を使用できる。たとえばホウ素については
、ホウ酸、ホウ酸ナトリウム及びホウ砂を使用でき、ケ
イ素については、コロイド状シリカ、シリカゲル、ケイ
酸ナトリウム、エアロジルなどを使用できる。さらに結
晶化には、ガラス、ステンレス鋼などで形成された容器
を使用できる。
かかる場合、ボラリットDは反応体又は結晶化容器に由
来する不純物を含む場合がある。たとえば、市販のシリ
カはkQtos 2,000ppm以下を含むが、10
、OOOppm程度のアルミナ含量では、他の性質、た
とえば疎水性及び脱水力が変化されることがあったとし
ても、構造及び結晶学上の特性を変化させるものではな
い。
アルカリ金属又はアルカリ土類金属の水酸化物又はハロ
ゲン化物の如き鉱化剤を添加することもできる。
ボラリットDは、高温度での熱処理及び水蒸気の存在下
における熱処理のいずれにおいても非常に安定である。
本発明によるボラリットDは、そのままで又は好ましく
はシリカ、アルミナ及びクレー様物質から選ばれる不活
性担体上に分散担持された状態で触媒反応又は吸収処理
で使用される。一般に、下記の多数の反応で利用される
l トルエンをメタノールでアルキル化してキシレン、
主としてパラ−キシレンを生成する反応 2 トルエンを不均化して主としてパラ−キシレンを生
成する反応 3 ジメチルエーテル及び/又はメタノール又は他の低
級アルコールのオレフィン類及び芳香族類の如き炭化水
素への変換反応 4 クラッキング及び水素化分解 5 ノルマル−パラフィン及びナフテンの異性化 6 オレフィン結合又はアセチレン結合を有する化合物
の重合 7 改質反応 8 オルト−キシレンの如きポリアルキル置換芳香族化
合物の異性化 9 芳香族類、特にトルエンの不均化 lO脂肪族カルボニル化合物の少なくとも部分的芳香族
炭化水素への変換反応 11  他のC8芳香族炭化水素からエチルベンゼンの
分離 12  炭化水素の水素添加及び脱水素13  メタン
化 14  酸化、特に内燃機関排出物の酸化15  含酸
素脂肪族化合物の脱水 16  オレフィンの高オクタン価燃料への変換特に、
本発明のボラリットDは、メチル第3級ブチルエーテル
からメタノール及びイソブチレンを生成する反応におけ
る触媒として有効に使用される。
上述した本発明の詳細な説明するために、次にいくつか
の実施例について述べるが、これに限定されるものでは
ない。
実施例1 CO!を含有しない雰囲気に維持したパイレックスガラ
ス容器に、水酸化テトラブチルアンモニウムの25%(
重量)溶液2259を導入し、ついで撹拌しながらホウ
酸20gを加えた。
溶解後、なお撹拌を続けなからオルトケイ酸テトラエチ
ルエステル200gを添加し、KOHO,29の存在下
で反応させた。
オルトケイ酸エステルの加水分解によって生成するエタ
ノールを留去後、蒸留水を加えて全量をIQとした。
水熱反応を、撹拌機付チタン製オートクレーブにおいて
165℃で12日間行った。
550℃でか焼して得られたH+形の結晶性生成物は、
第1表に示すX線回折スペクトルを示した。
赤外線吸収スペクトルでは、919CJ!−ゝにおける
吸収(ホウ素の特徴である)を示した。
比表面積(窒素を使用し、BET法による): 415
x″/9 細孔容積     : 0.18cz3/gモル比5i
Ot/Bt03  : 4.8実施例2 実施例1の操作と同様にして、水酸化テトラブチルアン
モニウムの40%(111度)溶液113g、ホウ酸1
09.40%Ludox A、S、コロイド状シリカ7
59を反応させた。
水熱反応を、テフロン内張りオートクレーブにおいて1
50℃で12日間行った。
このようにして得られた結晶性生成物は、モル比5iO
t/BffiO,= 10.4を有し、550℃でか焼
したH+形の場合、第1表に示すX線回折スペクトルを
示した。赤外線吸収スペクトルでは、918cm−’ 
iこ特徴的な吸収バンドを示した。
比表面積(窒素ガスを使用し、BET法による):  
335i″/g 細孔容積    :  0.115cm’/g参考例 内径81mの電気加熱式管状反応器に、実施例1に従っ
て調製した粒径30ないし50メツシユ(ASTM。
米国シリーズ)のボラリットD触媒3Mσ(1,35g
)を充填した。
定量ポンプにより、反応器に、予熱管で予熱したメチル
第3級ブチルエーテルを導入した。
反応器の下流に、6バールに設定した圧力チエツク弁を
設けた。このチエツク弁に、適当に加熱される試料採集
装置を具備せしめ、圧力が低下する際、反応器の流出物
をガスクロマトグラフィーに導入するようにした。
第2表に示す温度に加熱し、メチル第3級ブチルエーテ
ルを各種の液空間速度(L I S V )で導入した
得られた結果を同じく第2表に示す。

Claims (1)

  1. 【特許請求の範囲】 1 結晶性シリカの結晶格子内に、ケイ素に代わる置換
    元素としてホウ素を導入させてなる結晶性変性シリカで
    あって、無水状態で、式 (0−1)R_2O・(0−1)C_2_/_nO・B
    _2O_3・(4−20)SiO_2(式中、Rはテト
    ラブチルアンモニウムカチオンであり、CはH^+、N
    H_4^+又は原子価nの金属の如きカチオンである)
    に相当し、H^+形の場合、下記データに相当するX線
    回折スペクトルを有することを特徴とする、結晶性変性
    シリカ。 ▲数式、化学式、表等があります▼ 記号の説明:VS=非常に強いS=強い M=中位MW=多少弱い W=弱い 2 結晶性シリカの結晶格子内に、ケイ素に代わる置換
    元素としてホウ素を導入させてなる結晶性変性シリカで
    あって、無水状態で、式 (0−1)R_2O・(0−1)C_2_/_nO・B
    _2O_3・(4−20)SiO_2(式中、Rはテト
    ラブチルアンモニウムカチオンであり、CはH^+、N
    H_4^+又は原子価nの金属の如きカチオンである)
    に相当し、H^+形の場合、下記データに相当するX線
    回折スペクトルを有する結晶性変性シリカの製法におい
    て、ケイ素誘導体、ホウ素誘導体及びテトラブチルアン
    モニウム化合物を、水熱条件下、pH9ないし14、温
    度110ないし220℃で1ないし30日間反応させる
    ことを特徴とする、結晶性変性シリカの製法。 ▲数式、化学式、表等があります▼ 記号の説明:VS=非常に強いS=強い M=中位MW=多少弱い W=弱い 3 特許請求の範囲第2項記載の製法において、前記ケ
    イ素誘導体がケイ素の有機誘導体である、結晶性変性シ
    リカの製法。 4 特許請求の範囲第3項記載の製法において、前記ケ
    イ素の有機誘導体がオルトケイ酸テトラアルキルエステ
    ルである、結晶性変性シリカの製法。 5 特許請求の範囲第2項記載の製法において、前記ホ
    ウ素誘導体がホウ酸である、結晶性変性シリカの製法。
JP1030078A 1978-06-22 1989-02-10 結晶性変性シリカ及びその製法 Granted JPH0230612A (ja)

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IT24844A/78 1978-06-22
IT24844/78A IT1096596B (it) 1978-06-22 1978-06-22 Materiale sintetico a base di silice
IT22638A/79 1979-05-14
IT2263879A IT1166822B (it) 1979-05-14 1979-05-14 Materiali sintetici costrituiti da ossidi di silicio e boro avente struttura cristallina porosa loro metodo di preparazione ed uso degli stessi

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JP7826679A Division JPS557598A (en) 1978-06-22 1979-06-22 Silicon based synthetic substance and method
JP62256430A Division JPS63123805A (ja) 1978-06-22 1987-10-13 結晶性変性シリカ及びその製法

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JPH0223481B2 JPH0223481B2 (ja) 1990-05-24

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US3972983A (en) * 1974-11-25 1976-08-03 Mobil Oil Corporation Crystalline zeolite ZSM-20 and method of preparing same
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IN146957B (ja) 1976-10-18 1979-10-20 Standard Oil Co
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RO78795A (ro) 1983-08-03
DK149839B (da) 1986-10-13
LU81415A1 (fr) 1979-09-12
DK593084A (da) 1984-12-11
HU181955B (en) 1983-11-28
PL216527A1 (ja) 1980-04-21
DK165174B (da) 1992-10-19
DK149839C (da) 1987-03-16
SE8803721D0 (sv) 1988-10-18
NO156125C (no) 1987-07-29
YU148479A (en) 1983-01-21
NL190144B (nl) 1993-06-16
ES8101921A1 (es) 1980-12-16
DK3592D0 (da) 1992-01-10
ATA438279A (de) 1986-03-15
DK3692D0 (da) 1992-01-10
GB2078704A (en) 1982-01-13
DD144398A5 (de) 1980-10-15
IN151534B (ja) 1983-05-14
DK593084D0 (da) 1984-12-11
DK164813B (da) 1992-08-24
CH643803A5 (it) 1984-06-29
GB2024790B (en) 1982-11-24
PL118686B1 (en) 1981-10-31
SE464249B (sv) 1991-03-25
TR21215A (tr) 1984-01-02
NO792059L (no) 1979-12-28
SE464248B (sv) 1991-03-25
FR2429182A1 (fr) 1980-01-18
SE8803722L (sv) 1988-10-18
CA1155824A (en) 1983-10-25
SE445521B (sv) 1986-06-30
IE48198B1 (en) 1984-10-31
US4656016A (en) 1987-04-07
JPH0217482B2 (ja) 1990-04-20
GR66589B (ja) 1981-03-30
DE2924915A1 (de) 1980-01-03
AR225417A1 (es) 1982-03-31
SE8403805D0 (sv) 1984-07-20
SE8803721L (sv) 1988-10-18
PT69799A (en) 1979-07-01
SE7905452L (sv) 1979-12-23
AU531123B2 (en) 1983-08-11
JPH0223481B2 (ja) 1990-05-24
NO156125B (no) 1987-04-21
DK3692A (da) 1992-01-10
DK164813C (da) 1993-01-11
DK3592A (da) 1992-01-10
RO78795B (ro) 1983-07-30
US4666692A (en) 1987-05-19
SE462845B (sv) 1990-09-10
GB2024790A (en) 1980-01-16
NL7904909A (nl) 1979-12-28
DE2924915C2 (de) 1983-11-17
EG13934A (en) 1983-03-31
IL57582A (en) 1983-09-30
SE8803722D0 (sv) 1988-10-18
ES482161A0 (es) 1980-12-16
PH15865A (en) 1983-04-13
AU4787479A (en) 1980-01-03
JPH01275417A (ja) 1989-11-06
SE8403805L (sv) 1984-07-20
IL57582A0 (en) 1979-10-31
BG39638A3 (en) 1986-07-15
DK165174C (da) 1993-03-01
AT381483B (de) 1986-10-27
GB2078704B (en) 1983-04-07
DK165173C (da) 1993-03-01
DK165173B (da) 1992-10-19
IE791169L (en) 1979-12-22
NL190144C (nl) 1993-11-16
DK240379A (da) 1979-12-23
FR2429182B1 (ja) 1984-10-12

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