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Carbon dioxide adsorbents
Patent
report
alumina composite oxides and zeolites with silica/alumina molar ratio >30. It may further comprise 2 one of Au, Ag, Cu, Fe, Sb, Se, Te, and Ta and their oxides as a 2nd catalyst, at 0.01-5 g/l catalyst, and Snd/lst catalyst support weight ratio cl. The catalyst is used for treating flue gases containing HCI, dioxins, and furans; eliminating pollutants in the gases by oxidative decomposition while suppressing secondary pollutant formation from gaseous precursors.
tion engine startup, before the catalytic converter has attained its effective operating temperature. The zeolitic molecular sieve is modified by inserting certain metal ions into its structure. In particular, a modified Y zeolite having a high adsorption capacity for propylene is disclosed.
SEPARATION
Detergent builder combination 3-hydroxy-2,2’-iminodisuccinic
PROCESSES
Zeolite adsorbents for preventing tion engine exhaust gas catalysts D. Lindner; E. Lox; B. Engler Degussa A.-G. Eur. Pat. Appl. 638,349, Feb.
poisoning
et al. 15, 1995;
Ger.
An adsorber containing refractory zeolites, minated mordenite, dealuminated zeolite ZSM-5 with SiO,/AI,O, molar ratios of >8 is P, S, Zn, and other contaminants from the adsorbents may be doped with Cu, Fe, Na, in the acid H-form.
Method T. Shioda; Mitsubishi Jpn. Kokai 1993
for the separation
of combus-
Appl.
Aug.
4, 1993
for
example, dealuY, and/or zeolite used to remove Pb, exhaust gases. The and/or K or may be
of mxylene
H. Yasuda; N. Saito et al. Kagaku K. K. Tokkyo Koho 95,33,689, Feb.
3, 1995;
Appl.
July
23,
m-Xylene is separated from a mixture of C, aromatic hydrocarbons (e.g., a raffinate from a pxylene plant) by chromatography and distillation. Toluene (desorbent) and a mixture of C, aromatic hydrocarbons containing m-xylene are applied to a chromatographic separation apparatus packed with a zeolite strongly adsorbing m-xylene for separating the mixture into the m-xylene fraction and the non-m-xylene fraction, followed by a first distillation for distilling the m-xvlene fraction and seaarating m-xylene and toluene, a second distillation for distilling the non-m-xylene fraction and separating the high boiling material and toluene, and recycling the toluene desorbent recovered in the first and the second distillation steps. This process efficiently recovers m-xylene of high purity (299.5%) which is suitable as a raw material for isophthalic acid manufacture.
Carbon
dioxide
adsorbents
K. Terase; M. Nagase Asahi Glass Co. Ltd. Jpn. Kokai Tokkyo Koho 1993
95,39,752,
Feb.
IO, 1995;
Appl.
July
28,
Adsorbents for carbon dioxide are sodium-containing aluminosilicates having 2-80 equivalent % of Na ion exchanged with Ba ion. The adsorbents are manufactured by immersion of sodiumcontaining aluminosilicates in aqueous Ba salt solution. The adsorbents are especially useful for CO, separation by a pressureswing adsorption method.
Process aromatic
for the adsorptive hydrocarbons
separation
of m-xylene
from
S. Kulprathipanja UOP Inc. U.S. 5,382,747, Jan. 17, 1995; Appl. Aug. 23, 1993 m-Xylene is recovered from a mixture of C, aromatic hydrocarbons including PhEt and 22 other xylenes by liquid phase adsorptive separation using a Na, or Na- and Li-exchanged Y zeolite as the adsorbent. Performance is improved by maintaining the adsorbent in narrow ranges of temperature and hydration. PhMe is the preferred desorbent.
Modified
large pore-zeolites
for trapping
alkenes
W. Hertl; I. Lachman Corning Corp. Eur. Pat. Appl. 639,400, Feb. 22, 1995; U.S. Appl. Aug. 16, 1993 A modified large pore zeolitic molecular sieve structure is disclosed for adsorbing alkenes emitted during internal combus-
322
Zeolites
17:320-324,
1996
DETERGENTS
B. Kottwitz; H. Upadek Henkel K.-G.a.A. Ger. Offen. 4,311,440,
Oct.
comprising acid or salt
13, 1994;
Appl.
Apr.
zeolite, l-30% or its alkali metal and/or crystalphosphate-free
Detergent builder combination comprising 3-[bis(carboxymethyl)amino]-Nhydroxypropionamides and salts as sequestering agents A. Kud; 4,313,137,
V. Schwendemann Oct.
and
7, 1993
A builder combination containing 15-60% HO,CCH,CH(CO,H)NHCH(CO,H)CH(OH)CO,H or ammonium salt, and l-20% of an amorphous line silicate is useful in detergents, especially laundry detergents.
T. Greindl; BASF A.-G. Ger. Offen.
zeolite
zeolite
and
et al.
27, 1994;
Appl.
Apr.
22, 1993
Sequestering agents (X0,CCH2),NCHR’CHR2CONHOY (R’-* = H, Me, Et; X, Y = H, alkali metal, ammonium) are prepared for use as detergent builders and bleach stabilizers. lminodiacetic acid, Me acrylate, H,NOH, and NaOH were used in the preparation of (HO,CCH,),NCH,CH,CONHOH mono-Na salt which was used (5 parts) with 30 parts zeolite A in a laundry detergent composition that inhibited incrustations in fabrics during repeated laundering.
Laundry detergent ions as biocides Y. Ichikawa Nichiban Kenkyusho Jpn. Kokai Tokkyo 1993
bars containing
K.K. Koho 94,279,783,
silver
Oct.
Zeolite particles containing Ag and/or laundry bars to provide biocidal and particular, zeolite particles treated with were used in laundry detergent bars.
and/or
4, 1994;
Mar.
29,
Cu ions are included deodorant properties. Ag ions and MeSi(OMe),
in In
Detergent compositions containing system having good color stability
zeolite
A.P. Chapple; J.V. Boskamp; M.R.P. Van Vliet Unilever PLC; Unilever N. V. PCT Int. Appl. 94,21,775, Sept. 29, 1994; U.K. Appl.
Appl.
copper
and a bleach
Mar.
18, 1993
A particulate detergent composition (especially with bulk density 2700 g/l) containing an organic surfactant system, a zeolite P builder having a Si/AI ratio 51.33 (zeolite MAP), and a bleach catalyst containing Mn and/or Fe ions and a ligand such as 1,4,7trimethyl-1,4,7-triazacyclononane shows better resistance of the bleach catalyst against discoloration during storage than a similar composition containing zeolite A as the builder.
Storage-stable carbonates
detergent
G.M. Baillely; P.A.R.G. France; Procter and Gamble Co. PCT Int. Appl. 95,02,724, Jan. 1993
compositions C.P.D.
containing
per-
Wilkinson
26, 1995;
Eur.
Pat. Appl.
July
14,
Storage-stable granular detergent compositions comprise an alkali metal percarbonate having a mean particle size of 250-900 urn and a hydrophobic material (e.g., comprising 90% zeolite A and 10% hydrophobic silica) in an alkali metal percarbonate:hydrophobic material weight ratio of 4:l to 4O:l.
report
alumina composite oxides and zeolites with silica/alumina molar ratio >30. It may further comprise 2 one of Au, Ag, Cu, Fe, Sb, Se, Te, and Ta and their oxides as a 2nd catalyst, at 0.01-5 g/l catalyst, and Snd/lst catalyst support weight ratio cl. The catalyst is used for treating flue gases containing HCI, dioxins, and furans; eliminating pollutants in the gases by oxidative decomposition while suppressing secondary pollutant formation from gaseous precursors.
tion engine startup, before the catalytic converter has attained its effective operating temperature. The zeolitic molecular sieve is modified by inserting certain metal ions into its structure. In particular, a modified Y zeolite having a high adsorption capacity for propylene is disclosed.
SEPARATION
Detergent builder combination 3-hydroxy-2,2’-iminodisuccinic
PROCESSES
Zeolite adsorbents for preventing tion engine exhaust gas catalysts D. Lindner; E. Lox; B. Engler Degussa A.-G. Eur. Pat. Appl. 638,349, Feb.
poisoning
et al. 15, 1995;
Ger.
An adsorber containing refractory zeolites, minated mordenite, dealuminated zeolite ZSM-5 with SiO,/AI,O, molar ratios of >8 is P, S, Zn, and other contaminants from the adsorbents may be doped with Cu, Fe, Na, in the acid H-form.
Method T. Shioda; Mitsubishi Jpn. Kokai 1993
for the separation
of combus-
Appl.
Aug.
4, 1993
for
example, dealuY, and/or zeolite used to remove Pb, exhaust gases. The and/or K or may be
of mxylene
H. Yasuda; N. Saito et al. Kagaku K. K. Tokkyo Koho 95,33,689, Feb.
3, 1995;
Appl.
July
23,
m-Xylene is separated from a mixture of C, aromatic hydrocarbons (e.g., a raffinate from a pxylene plant) by chromatography and distillation. Toluene (desorbent) and a mixture of C, aromatic hydrocarbons containing m-xylene are applied to a chromatographic separation apparatus packed with a zeolite strongly adsorbing m-xylene for separating the mixture into the m-xylene fraction and the non-m-xylene fraction, followed by a first distillation for distilling the m-xvlene fraction and seaarating m-xylene and toluene, a second distillation for distilling the non-m-xylene fraction and separating the high boiling material and toluene, and recycling the toluene desorbent recovered in the first and the second distillation steps. This process efficiently recovers m-xylene of high purity (299.5%) which is suitable as a raw material for isophthalic acid manufacture.
Carbon
dioxide
adsorbents
K. Terase; M. Nagase Asahi Glass Co. Ltd. Jpn. Kokai Tokkyo Koho 1993
95,39,752,
Feb.
IO, 1995;
Appl.
July
28,
Adsorbents for carbon dioxide are sodium-containing aluminosilicates having 2-80 equivalent % of Na ion exchanged with Ba ion. The adsorbents are manufactured by immersion of sodiumcontaining aluminosilicates in aqueous Ba salt solution. The adsorbents are especially useful for CO, separation by a pressureswing adsorption method.
Process aromatic
for the adsorptive hydrocarbons
separation
of m-xylene
from
S. Kulprathipanja UOP Inc. U.S. 5,382,747, Jan. 17, 1995; Appl. Aug. 23, 1993 m-Xylene is recovered from a mixture of C, aromatic hydrocarbons including PhEt and 22 other xylenes by liquid phase adsorptive separation using a Na, or Na- and Li-exchanged Y zeolite as the adsorbent. Performance is improved by maintaining the adsorbent in narrow ranges of temperature and hydration. PhMe is the preferred desorbent.
Modified
large pore-zeolites
for trapping
alkenes
W. Hertl; I. Lachman Corning Corp. Eur. Pat. Appl. 639,400, Feb. 22, 1995; U.S. Appl. Aug. 16, 1993 A modified large pore zeolitic molecular sieve structure is disclosed for adsorbing alkenes emitted during internal combus-
322
Zeolites
17:320-324,
1996
DETERGENTS
B. Kottwitz; H. Upadek Henkel K.-G.a.A. Ger. Offen. 4,311,440,
Oct.
comprising acid or salt
13, 1994;
Appl.
Apr.
zeolite, l-30% or its alkali metal and/or crystalphosphate-free
Detergent builder combination comprising 3-[bis(carboxymethyl)amino]-Nhydroxypropionamides and salts as sequestering agents A. Kud; 4,313,137,
V. Schwendemann Oct.
and
7, 1993
A builder combination containing 15-60% HO,CCH,CH(CO,H)NHCH(CO,H)CH(OH)CO,H or ammonium salt, and l-20% of an amorphous line silicate is useful in detergents, especially laundry detergents.
T. Greindl; BASF A.-G. Ger. Offen.
zeolite
zeolite
and
et al.
27, 1994;
Appl.
Apr.
22, 1993
Sequestering agents (X0,CCH2),NCHR’CHR2CONHOY (R’-* = H, Me, Et; X, Y = H, alkali metal, ammonium) are prepared for use as detergent builders and bleach stabilizers. lminodiacetic acid, Me acrylate, H,NOH, and NaOH were used in the preparation of (HO,CCH,),NCH,CH,CONHOH mono-Na salt which was used (5 parts) with 30 parts zeolite A in a laundry detergent composition that inhibited incrustations in fabrics during repeated laundering.
Laundry detergent ions as biocides Y. Ichikawa Nichiban Kenkyusho Jpn. Kokai Tokkyo 1993
bars containing
K.K. Koho 94,279,783,
silver
Oct.
Zeolite particles containing Ag and/or laundry bars to provide biocidal and particular, zeolite particles treated with were used in laundry detergent bars.
and/or
4, 1994;
Mar.
29,
Cu ions are included deodorant properties. Ag ions and MeSi(OMe),
in In
Detergent compositions containing system having good color stability
zeolite
A.P. Chapple; J.V. Boskamp; M.R.P. Van Vliet Unilever PLC; Unilever N. V. PCT Int. Appl. 94,21,775, Sept. 29, 1994; U.K. Appl.
Appl.
copper
and a bleach
Mar.
18, 1993
A particulate detergent composition (especially with bulk density 2700 g/l) containing an organic surfactant system, a zeolite P builder having a Si/AI ratio 51.33 (zeolite MAP), and a bleach catalyst containing Mn and/or Fe ions and a ligand such as 1,4,7trimethyl-1,4,7-triazacyclononane shows better resistance of the bleach catalyst against discoloration during storage than a similar composition containing zeolite A as the builder.
Storage-stable carbonates
detergent
G.M. Baillely; P.A.R.G. France; Procter and Gamble Co. PCT Int. Appl. 95,02,724, Jan. 1993
compositions C.P.D.
containing
per-
Wilkinson
26, 1995;
Eur.
Pat. Appl.
July
14,
Storage-stable granular detergent compositions comprise an alkali metal percarbonate having a mean particle size of 250-900 urn and a hydrophobic material (e.g., comprising 90% zeolite A and 10% hydrophobic silica) in an alkali metal percarbonate:hydrophobic material weight ratio of 4:l to 4O:l.